[BUG JDev 9.0.3.3] Error in various BC4J editor dialogs

Currently I have a number of problems when working with our BC4J project and I can't figure out what's going wrong.
When I first start JDeveloper, it displays the following error message:
Object: com.nl.deree.mais2003.persistence.bc4j.bc4j
Unable to resolve object references for object FlexisPrompts during load.
oracle.jbo.dt.objects.JboException: Unable to resolve object references for object FlexisPrompts during load.
     void oracle.jbo.dt.objects.JboException.throwException(java.lang.String, oracle.jbo.dt.objects.JboNamedObject, java.lang.Throwable)
          JboException.java:81
     void oracle.jbo.dt.objects.JboPackage.loadResolveReferencesXML()
          JboPackage.java:984
     void oracle.jbo.dt.objects.JboPackage.loadFromXMLFile(java.net.URL, java.io.Reader)
          JboPackage.java:718
     void oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile()
          JboBaseObject.java:1954
     void oracle.jbo.dt.objects.JboPackage.loadFromXMLFile()
          JboPackage.java:676
     void oracle.jbo.dt.jdevx.JdvNode.loadPackage(oracle.jbo.dt.objects.JboPackage)
          JdvNode.java:483
     boolean oracle.jbo.dt.jdevx.JdvNode.load()
          JdvNode.java:318
     java.util.Iterator oracle.jbo.dt.jdevx.JdvBaseNode.getChildren()
          JdvBaseNode.java:147
     java.util.Iterator oracle.ideimpl.explorer.ExplorerNode.getChildNodes()
          ExplorerNode.java:247
     void oracle.ideimpl.explorer.BaseTreeExplorer.addChildren(oracle.ide.explorer.TNode)
          BaseTreeExplorer.java:292
     java.util.Enumeration oracle.ideimpl.explorer.ExplorerNode.getChildTNodes()
          ExplorerNode.java:260
     void oracle.ideimpl.navigator.NavigatorWindowImpl.enumerateAllChildren(oracle.ide.explorer.TNode)
          NavigatorWindowImpl.java:1203
     void oracle.ideimpl.navigator.NavigatorWindowImpl.enumerateAllChildren(oracle.ide.explorer.TNode)
          NavigatorWindowImpl.java:1207
     void oracle.ideimpl.navigator.NavigatorWindowImpl.restoreExpansionState(java.lang.String, oracle.ide.util.PropertyAccess)
          NavigatorWindowImpl.java:1141
     void oracle.ideimpl.navigator.NavigatorWindowImpl.loadLayout(oracle.ide.util.PropertyAccess)
          NavigatorWindowImpl.java:591
     java.awt.Component oracle.ideimpl.navigator.NavigatorWindowImpl.getGUI()
          NavigatorWindowImpl.java:378
     javax.swing.JComponent oracle.ide.docking.DockableWindow.getHostedComponent()
          DockableWindow.java:219
     javax.swing.JComponent oracle.ideimpl.docking.DockableHolder.getOrCreateComponent()
          DockableHolder.java:41
     javax.swing.JComponent oracle.ideimpl.docking.TitledPanel._addClientComponent(oracle.ideimpl.docking.DockableHolder)
          TitledPanel.java:771
     javax.swing.JComponent oracle.ideimpl.docking.TitledPanel.addClientComponent(oracle.ideimpl.docking.DockableHolder)
          TitledPanel.java:756
     javax.swing.JComponent oracle.ideimpl.docking.TitledPanel.addClient(oracle.ide.docking.Dockable, boolean)
          TitledPanel.java:393
     oracle.ideimpl.docking.TitledPanel oracle.ideimpl.docking.TitledPanel.loadLayout(oracle.ideimpl.docking.dockLayout.DockLayoutPersistence, java.lang.String)
          TitledPanel.java:1335
     javax.swing.JComponent oracle.ideimpl.docking.DockStationImpl$DockLayoutProperties.loadComponent(java.lang.String)
          DockStationImpl.java:1343
     oracle.ideimpl.docking.dockLayout.DockLayoutInfoLeaf oracle.ideimpl.docking.dockLayout.DockLayoutInfoLeaf.loadLayout(oracle.ideimpl.docking.dockLayout.DockLayoutPersistence, java.lang.String)
          DockLayoutInfoLeaf.java:87
     oracle.ideimpl.docking.dockLayout.DockLayoutInfo oracle.ideimpl.docking.dockLayout.AbstractDockLayoutInfoNode.loadLayout(oracle.ideimpl.docking.dockLayout.DockLayoutPersistence, java.lang.String, int, java.lang.String)
          AbstractDockLayoutInfoNode.java:618
     oracle.ideimpl.docking.dockLayout.DockLayoutInfo oracle.ideimpl.docking.dockLayout.AbstractDockLayoutInfoNode.loadLayout(oracle.ideimpl.docking.dockLayout.DockLayoutPersistence, java.lang.String, int, java.lang.String)
          AbstractDockLayoutInfoNode.java:608
     oracle.ideimpl.docking.dockLayout.DockLayoutInfo oracle.ideimpl.docking.dockLayout.AbstractDockLayoutInfoNode.loadLayout(oracle.ideimpl.docking.dockLayout.DockLayoutPersistence, java.lang.String, int, java.lang.String)
          AbstractDockLayoutInfoNode.java:608
     oracle.ideimpl.docking.dockLayout.DockLayoutInfo oracle.ideimpl.docking.dockLayout.AbstractDockLayoutInfoNode.loadLayout(java.awt.Container, oracle.ideimpl.docking.dockLayout.DockLayoutPersistence, java.lang.String)
          AbstractDockLayoutInfoNode.java:425
     void oracle.ideimpl.docking.dockLayout.DockLayout.loadLayout(java.awt.Container, oracle.ideimpl.docking.dockLayout.DockLayoutPersistence, java.lang.String)
          DockLayout.java:270
     void oracle.ideimpl.docking.DockPanel.loadLayout(oracle.ideimpl.docking.dockLayout.DockLayoutPersistence, java.lang.String)
          DockPanel.java:306
     void oracle.ideimpl.docking.MainPort.loadLayout(oracle.ideimpl.docking.dockLayout.DockLayoutPersistence, java.lang.String)
          MainPort.java:442
     void oracle.ideimpl.docking.DockStationImpl.loadValidLayout(oracle.ide.util.PropertyAccess)
          DockStationImpl.java:1498
     void oracle.ideimpl.docking.DockStationImpl.loadLayout(oracle.ide.util.PropertyAccess)
          DockStationImpl.java:1438
     void oracle.ideimpl.docking.DockStationListener.init(oracle.ide.layout.Layout)
          DockStationListener.java:35
     void oracle.ide.layout.Layouts.activate(oracle.ide.layout.Layout, java.util.HashMap)
          Layouts.java:754
     void oracle.ide.layout.Layouts.activateLayout(oracle.ide.layout.IdeLayout, boolean)
          Layouts.java:163
     void oracle.ideimpl.MainWindowImpl$1.run()
          MainWindowImpl.java:595
     void java.awt.event.InvocationEvent.dispatch()
          InvocationEvent.java:147
     void java.awt.EventQueue.dispatchEvent(java.awt.AWTEvent)
          EventQueue.java:337
     boolean java.awt.EventDispatchThread.pumpOneEventForHierarchy(java.awt.Component)
          EventDispatchThread.java:131
     void java.awt.EventDispatchThread.pumpEventsForHierarchy(java.awt.Conditional, java.awt.Component)
          EventDispatchThread.java:98
     void java.awt.EventDispatchThread.pumpEvents(java.awt.Conditional)
          EventDispatchThread.java:93
     void java.awt.EventDispatchThread.run()
          EventDispatchThread.java:85This error is always the same. However, sometimes it does not come up when starting JDev, but in stead when I compile the BC4J project. It never pops up a 2nd time during the session.
Besides this, I get an error when I double click on some ViewObject in the BC4J project, but it does not happen for EVERY ViewObject. However, it does occur consitently every time I open it.
This is the error message:
Copy operation failed, some edits may not be cancellable.
oracle.xml.parser.v2.XMLParseException: Expected name instead of <.
     void oracle.xml.parser.v2.XMLError.flushErrors1()
          XMLError.java:205
     java.lang.String oracle.xml.parser.v2.NonValidatingParser.parseAttrValue()
          NonValidatingParser.java:1478
     void oracle.xml.parser.v2.NonValidatingParser.parseAttr()
          NonValidatingParser.java:1383
     void oracle.xml.parser.v2.NonValidatingParser.parseAttributes()
          NonValidatingParser.java:1325
     java.lang.String oracle.xml.parser.v2.NonValidatingParser.parseElement()
          NonValidatingParser.java:1171
     void oracle.xml.parser.v2.NonValidatingParser.parseRootElement()
          NonValidatingParser.java:294
     void oracle.xml.parser.v2.NonValidatingParser.parseDocument()
          NonValidatingParser.java:261
     void oracle.xml.parser.v2.XMLParser.parse(java.io.Reader)
          XMLParser.java:251
     oracle.jbo.dt.objects.JboNamedObject oracle.jbo.dt.objects.CloneService.copyObject(oracle.jbo.dt.objects.JboNamedObject, oracle.jbo.dt.objects.JboNamedObject)
          CloneService.java:102
     oracle.jbo.dt.objects.JboNamedObject oracle.jbo.dt.objects.CloneService.cloneObject(oracle.jbo.dt.objects.JboNamedObject)
          CloneService.java:52
     oracle.jbo.dt.objects.JboNamedObject oracle.jbo.dt.objects.JboNamedObject.cloneObject()
          JboNamedObject.java:523
     oracle.jbo.dt.objects.JboNamedObject oracle.jbo.dt.ui.main.DtuUtil.cloneObject(java.awt.Component, oracle.jbo.dt.objects.JboNamedObject)
          DtuUtil.java:742
     void oracle.jbo.dt.ui.view.VOWizard.<init>(java.awt.Frame, oracle.jbo.dt.objects.JboApplication, oracle.jbo.dt.objects.JboView)
          VOWizard.java:78
     oracle.jbo.dt.objects.JboView oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeVOWizard(java.awt.Frame, oracle.jbo.dt.objects.JboPackage, oracle.jbo.dt.objects.JboView)
          JdxMenuManager.java:615
     oracle.jbo.dt.objects.JboView oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeViewWizard(oracle.jbo.dt.objects.JboPackage, oracle.jbo.dt.objects.JboView)
          JdxMenuManager.java:608
     void oracle.jbo.dt.ui.main.DtuMenuManager.doEditMenuAction(oracle.jbo.dt.objects.JboNamedObject)
          DtuMenuManager.java:1104
     boolean oracle.jbo.dt.jdevx.ui.JdxMenuManager.handleDefaultAction(oracle.ide.addin.Context)
          JdxMenuManager.java:349
     boolean oracle.ide.ContextMenu.fireDefaultAction(oracle.ide.addin.Context)
          ContextMenu.java:343
     void oracle.ideimpl.explorer.BaseTreeExplorer.fireDefaultAction(java.awt.event.InputEvent)
          BaseTreeExplorer.java:1202
     void oracle.ideimpl.explorer.BaseTreeExplorer.dblClicked(java.awt.event.MouseEvent)
          BaseTreeExplorer.java:1448
     void oracle.ideimpl.explorer.BaseTreeExplorer.mouseReleased(java.awt.event.MouseEvent)
          BaseTreeExplorer.java:1469
     void oracle.ideimpl.explorer.CustomTree.processMouseEvent(java.awt.event.MouseEvent)
          CustomTree.java:171
     void java.awt.Component.processEvent(java.awt.AWTEvent)
          Component.java:3544
     void java.awt.Container.processEvent(java.awt.AWTEvent)
          Container.java:1164
     void java.awt.Component.dispatchEventImpl(java.awt.AWTEvent)
          Component.java:2593
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1213
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.LightweightDispatcher.retargetMouseEvent(java.awt.Component, int, java.awt.event.MouseEvent)
          Container.java:2451
     boolean java.awt.LightweightDispatcher.processMouseEvent(java.awt.event.MouseEvent)
          Container.java:2216
     boolean java.awt.LightweightDispatcher.dispatchEvent(java.awt.AWTEvent)
          Container.java:2125
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1200
     void java.awt.Window.dispatchEventImpl(java.awt.AWTEvent)
          Window.java:922
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.EventQueue.dispatchEvent(java.awt.AWTEvent)
          EventQueue.java:339
     boolean java.awt.EventDispatchThread.pumpOneEventForHierarchy(java.awt.Component)
          EventDispatchThread.java:131
     void java.awt.EventDispatchThread.pumpEventsForHierarchy(java.awt.Conditional, java.awt.Component)
          EventDispatchThread.java:98
     void java.awt.EventDispatchThread.pumpEvents(java.awt.Conditional)
          EventDispatchThread.java:93
     void java.awt.EventDispatchThread.run()
          EventDispatchThread.java:85When I open the page with the generated SELECT query, it simply show this:
FROM QUERY_STATEMENTS QueryStatementsAll the attributes on the ViewObject are marked transient. Since this obviously is incorrect, I remove all attributes from the ViewObject and re-add them (from the Entity). Now the query is built and displayed correctly.
However, when I apply the changes it displays the following error message:
Save error. Copy operation failed.
java.lang.NullPointerException
     void oracle.jbo.dt.objects.JboView.loadDoneCopyTo(oracle.jbo.dt.objects.JboNamedObject)
          JboView.java:4763
     oracle.jbo.dt.objects.JboNamedObject oracle.jbo.dt.objects.CloneService.copyObject(oracle.jbo.dt.objects.JboNamedObject, oracle.jbo.dt.objects.JboNamedObject)
          CloneService.java:110
     void oracle.jbo.dt.objects.JboNamedObject.copyToThis(oracle.jbo.dt.objects.JboNamedObject)
          JboNamedObject.java:532
     boolean oracle.jbo.dt.ui.main.DtuUtil.copyObject(java.awt.Component, oracle.jbo.dt.objects.JboNamedObject, oracle.jbo.dt.objects.JboNamedObject)
          DtuUtil.java:759
     void oracle.jbo.dt.ui.main.dlg.DtuWizard.applyDone()
          DtuWizard.java:840
     void oracle.jbo.dt.ui.view.VOWizard.applyDone()
          VOWizard.java:422
     boolean oracle.jbo.dt.ui.main.dlg.DtuWizard.applyAction()
          DtuWizard.java:826
     void oracle.jbo.dt.ui.main.dlg.DtjMddWizardDialog.actionPerformed(java.awt.event.ActionEvent)
          DtuWizard.java:1936
     void oracle.bali.ewt.dialog.JEWTDialog.processActionEvent(java.awt.event.ActionEvent)
     void oracle.bali.ewt.dialog.JEWTDialog.processEvent(java.awt.AWTEvent)
     void oracle.bali.ewt.dialog.JEWTDialog$UIListener.actionPerformed(java.awt.event.ActionEvent)
     void javax.swing.AbstractButton.fireActionPerformed(java.awt.event.ActionEvent)
          AbstractButton.java:1450
     void javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(java.awt.event.ActionEvent)
          AbstractButton.java:1504
     void javax.swing.DefaultButtonModel.fireActionPerformed(java.awt.event.ActionEvent)
          DefaultButtonModel.java:378
     void javax.swing.DefaultButtonModel.setPressed(boolean)
          DefaultButtonModel.java:250
     void javax.swing.plaf.basic.BasicButtonListener.mouseReleased(java.awt.event.MouseEvent)
          BasicButtonListener.java:216
     void java.awt.Component.processMouseEvent(java.awt.event.MouseEvent)
          Component.java:3715
     void java.awt.Component.processEvent(java.awt.AWTEvent)
          Component.java:3544
     void java.awt.Container.processEvent(java.awt.AWTEvent)
          Container.java:1164
     void java.awt.Component.dispatchEventImpl(java.awt.AWTEvent)
          Component.java:2593
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1213
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.LightweightDispatcher.retargetMouseEvent(java.awt.Component, int, java.awt.event.MouseEvent)
          Container.java:2451
     boolean java.awt.LightweightDispatcher.processMouseEvent(java.awt.event.MouseEvent)
          Container.java:2216
     boolean java.awt.LightweightDispatcher.dispatchEvent(java.awt.AWTEvent)
          Container.java:2125
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1200
     void java.awt.Window.dispatchEventImpl(java.awt.AWTEvent)
          Window.java:922
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.EventQueue.dispatchEvent(java.awt.AWTEvent)
          EventQueue.java:339
     boolean java.awt.EventDispatchThread.pumpOneEventForHierarchy(java.awt.Component)
          EventDispatchThread.java:131
     void java.awt.EventDispatchThread.pumpEventsForHierarchy(java.awt.Conditional, java.awt.Component)
          EventDispatchThread.java:98
     void java.awt.Dialog.show()
          Dialog.java:380
     void java.awt.Component.show(boolean)
          Component.java:946
     void java.awt.Component.setVisible(boolean)
          Component.java:903
     void oracle.jbo.dt.ui.main.dlg.DtjDialog.setVisible(boolean)
          DtjDialog.java:137
     void oracle.jbo.dt.ui.main.dlg.DtjMddWizardDialog.setVisible(boolean)
          DtuWizard.java:1922
     boolean oracle.bali.ewt.dialog.JEWTDialog.runDialog()
     boolean oracle.jbo.dt.ui.main.dlg.DtjDialog.showDialog()
          DtjDialog.java:115
     boolean oracle.jbo.dt.ui.main.dlg.DtjMddWizardDialog.showDialog()
          DtuWizard.java:1881
     void oracle.jbo.dt.ui.main.dlg.DtuWizard.createMddWizard()
          DtuWizard.java:422
     void oracle.jbo.dt.ui.main.dlg.DtuWizard.setVisible(boolean)
          DtuWizard.java:276
     boolean oracle.jbo.dt.ui.main.dlg.DtuWizard.showDialog()
          DtuWizard.java:254
     oracle.jbo.dt.objects.JboView oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeVOWizard(java.awt.Frame, oracle.jbo.dt.objects.JboPackage, oracle.jbo.dt.objects.JboView)
          JdxMenuManager.java:616
     oracle.jbo.dt.objects.JboView oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeViewWizard(oracle.jbo.dt.objects.JboPackage, oracle.jbo.dt.objects.JboView)
          JdxMenuManager.java:608
     void oracle.jbo.dt.ui.main.DtuMenuManager.doEditMenuAction(oracle.jbo.dt.objects.JboNamedObject)
          DtuMenuManager.java:1104
     boolean oracle.jbo.dt.jdevx.ui.JdxMenuManager.handleDefaultAction(oracle.ide.addin.Context)
          JdxMenuManager.java:349
     boolean oracle.ide.ContextMenu.fireDefaultAction(oracle.ide.addin.Context)
          ContextMenu.java:343
     void oracle.ideimpl.explorer.BaseTreeExplorer.fireDefaultAction(java.awt.event.InputEvent)
          BaseTreeExplorer.java:1202
     void oracle.ideimpl.explorer.BaseTreeExplorer.dblClicked(java.awt.event.MouseEvent)
          BaseTreeExplorer.java:1448
     void oracle.ideimpl.explorer.BaseTreeExplorer.mouseReleased(java.awt.event.MouseEvent)
          BaseTreeExplorer.java:1469
     void oracle.ideimpl.explorer.CustomTree.processMouseEvent(java.awt.event.MouseEvent)
          CustomTree.java:171
     void java.awt.Component.processEvent(java.awt.AWTEvent)
          Component.java:3544
     void java.awt.Container.processEvent(java.awt.AWTEvent)
          Container.java:1164
     void java.awt.Component.dispatchEventImpl(java.awt.AWTEvent)
          Component.java:2593
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1213
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.LightweightDispatcher.retargetMouseEvent(java.awt.Component, int, java.awt.event.MouseEvent)
          Container.java:2451
     boolean java.awt.LightweightDispatcher.processMouseEvent(java.awt.event.MouseEvent)
          Container.java:2216
     boolean java.awt.LightweightDispatcher.dispatchEvent(java.awt.AWTEvent)
          Container.java:2125
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1200
     void java.awt.Window.dispatchEventImpl(java.awt.AWTEvent)
          Window.java:922
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.EventQueue.dispatchEvent(java.awt.AWTEvent)
          EventQueue.java:339
     boolean java.awt.EventDispatchThread.pumpOneEventForHierarchy(java.awt.Component)
          EventDispatchThread.java:131
     void java.awt.EventDispatchThread.pumpEventsForHierarchy(java.awt.Conditional, java.awt.Component)
          EventDispatchThread.java:98
     void java.awt.EventDispatchThread.pumpEvents(java.awt.Conditional)
          EventDispatchThread.java:93
     void java.awt.EventDispatchThread.run()
          EventDispatchThread.java:85Or, when in stead I press OK (which reports no error) and re-open the dialog, it displays this (similar) error:
Copy operation failed, some edits may not be cancellable. (when I press OK and re-open the dialog)
java.lang.NullPointerException
     void oracle.jbo.dt.objects.JboView.loadDoneCopyTo(oracle.jbo.dt.objects.JboNamedObject)
          JboView.java:4763
     oracle.jbo.dt.objects.JboNamedObject oracle.jbo.dt.objects.CloneService.copyObject(oracle.jbo.dt.objects.JboNamedObject, oracle.jbo.dt.objects.JboNamedObject)
          CloneService.java:110
     oracle.jbo.dt.objects.JboNamedObject oracle.jbo.dt.objects.CloneService.cloneObject(oracle.jbo.dt.objects.JboNamedObject)
          CloneService.java:52
     oracle.jbo.dt.objects.JboNamedObject oracle.jbo.dt.objects.JboNamedObject.cloneObject()
          JboNamedObject.java:523
     oracle.jbo.dt.objects.JboNamedObject oracle.jbo.dt.ui.main.DtuUtil.cloneObject(java.awt.Component, oracle.jbo.dt.objects.JboNamedObject)
          DtuUtil.java:742
     void oracle.jbo.dt.ui.view.VOWizard.<init>(java.awt.Frame, oracle.jbo.dt.objects.JboApplication, oracle.jbo.dt.objects.JboView)
          VOWizard.java:78
     oracle.jbo.dt.objects.JboView oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeVOWizard(java.awt.Frame, oracle.jbo.dt.objects.JboPackage, oracle.jbo.dt.objects.JboView)
          JdxMenuManager.java:615
     oracle.jbo.dt.objects.JboView oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeViewWizard(oracle.jbo.dt.objects.JboPackage, oracle.jbo.dt.objects.JboView)
          JdxMenuManager.java:608
     void oracle.jbo.dt.ui.main.DtuMenuManager.doEditMenuAction(oracle.jbo.dt.objects.JboNamedObject)
          DtuMenuManager.java:1104
     boolean oracle.jbo.dt.jdevx.ui.JdxMenuManager.handleDefaultAction(oracle.ide.addin.Context)
          JdxMenuManager.java:349
     boolean oracle.ide.ContextMenu.fireDefaultAction(oracle.ide.addin.Context)
          ContextMenu.java:343
     void oracle.ideimpl.explorer.BaseTreeExplorer.fireDefaultAction(java.awt.event.InputEvent)
          BaseTreeExplorer.java:1202
     void oracle.ideimpl.explorer.BaseTreeExplorer.dblClicked(java.awt.event.MouseEvent)
          BaseTreeExplorer.java:1448
     void oracle.ideimpl.explorer.BaseTreeExplorer.mouseReleased(java.awt.event.MouseEvent)
          BaseTreeExplorer.java:1469
     void oracle.ideimpl.explorer.CustomTree.processMouseEvent(java.awt.event.MouseEvent)
          CustomTree.java:171
     void java.awt.Component.processEvent(java.awt.AWTEvent)
          Component.java:3544
     void java.awt.Container.processEvent(java.awt.AWTEvent)
          Container.java:1164
     void java.awt.Component.dispatchEventImpl(java.awt.AWTEvent)
          Component.java:2593
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1213
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.LightweightDispatcher.retargetMouseEvent(java.awt.Component, int, java.awt.event.MouseEvent)
          Container.java:2451
     boolean java.awt.LightweightDispatcher.processMouseEvent(java.awt.event.MouseEvent)
          Container.java:2216
     boolean java.awt.LightweightDispatcher.dispatchEvent(java.awt.AWTEvent)
          Container.java:2125
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1200
     void java.awt.Window.dispatchEventImpl(java.awt.AWTEvent)
          Window.java:922
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.EventQueue.dispatchEvent(java.awt.AWTEvent)
          EventQueue.java:339
     boolean java.awt.EventDispatchThread.pumpOneEventForHierarchy(java.awt.Component)
          EventDispatchThread.java:131
     void java.awt.EventDispatchThread.pumpEventsForHierarchy(java.awt.Conditional, java.awt.Component)
          EventDispatchThread.java:98
     void java.awt.EventDispatchThread.pumpEvents(java.awt.Conditional)
          EventDispatchThread.java:93
     void java.awt.EventDispatchThread.run()
          EventDispatchThread.java:85When I try to remove the ViewObject instance from the Bc4jModule, I get this error:
java.lang.NullPointerException
     void oracle.jbo.dt.objects.JboAttribute.generateAttributeImports(java.lang.Object)
          JboAttribute.java:1507
     int oracle.jbo.dt.objects.JboView.generateAttributeMethods(int, java.lang.Object[], java.lang.StringBuffer)
          JboView.java:2621
     void oracle.jbo.dt.objects.JboView.createViewRowFile()
          JboView.java:1902
     void oracle.jbo.dt.objects.JboView.saveToJavaFile(boolean, boolean)
          JboView.java:1807
     void oracle.jbo.dt.objects.JboAppModule.saveToJavaFile(boolean, boolean)
          JboAppModule.java:1928
     void oracle.jbo.dt.objects.JboBaseObject.saveObject(boolean, boolean)
          JboBaseObject.java:2065
     void oracle.jbo.dt.objects.JboAppModule.saveObject(boolean, boolean)
          JboAppModule.java:1867
     boolean oracle.jbo.dt.ui.main.DtuUtil.saveObject(java.awt.Component, oracle.jbo.dt.objects.JboBaseObject, boolean, boolean, boolean)
          DtuUtil.java:711
     boolean oracle.jbo.dt.ui.main.dlg.DtuWizard.saveWizardObject(oracle.jbo.dt.objects.JboBaseObject, boolean)
          DtuWizard.java:786
     boolean oracle.jbo.dt.ui.module.AMWizard.finishAction()
          AMWizard.java:187
     boolean oracle.jbo.dt.ui.main.dlg.DtuWizard.doApplyAction()
          DtuWizard.java:860
     boolean oracle.jbo.dt.ui.main.dlg.DtjMddWizardDialog.okAction()
          DtuWizard.java:1901
     void oracle.jbo.dt.ui.main.dlg.DtjDialog.dismissDialog(boolean)
          DtjDialog.java:218
     void oracle.bali.ewt.dialog.JEWTDialog$UIListener.actionPerformed(java.awt.event.ActionEvent)
     void javax.swing.AbstractButton.fireActionPerformed(java.awt.event.ActionEvent)
          AbstractButton.java:1450
     void javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(java.awt.event.ActionEvent)
          AbstractButton.java:1504
     void javax.swing.DefaultButtonModel.fireActionPerformed(java.awt.event.ActionEvent)
          DefaultButtonModel.java:378
     void javax.swing.DefaultButtonModel.setPressed(boolean)
          DefaultButtonModel.java:250
     void javax.swing.plaf.basic.BasicButtonListener.mouseReleased(java.awt.event.MouseEvent)
          BasicButtonListener.java:216
     void java.awt.Component.processMouseEvent(java.awt.event.MouseEvent)
          Component.java:3715
     void java.awt.Component.processEvent(java.awt.AWTEvent)
          Component.java:3544
     void java.awt.Container.processEvent(java.awt.AWTEvent)
          Container.java:1164
     void java.awt.Component.dispatchEventImpl(java.awt.AWTEvent)
          Component.java:2593
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1213
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.LightweightDispatcher.retargetMouseEvent(java.awt.Component, int, java.awt.event.MouseEvent)
          Container.java:2451
     boolean java.awt.LightweightDispatcher.processMouseEvent(java.awt.event.MouseEvent)
          Container.java:2216
     boolean java.awt.LightweightDispatcher.dispatchEvent(java.awt.AWTEvent)
          Container.java:2125
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1200
     void java.awt.Window.dispatchEventImpl(java.awt.AWTEvent)
          Window.java:922
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.EventQueue.dispatchEvent(java.awt.AWTEvent)
          EventQueue.java:339
     boolean java.awt.EventDispatchThread.pumpOneEventForHierarchy(java.awt.Component)
          EventDispatchThread.java:131
     void java.awt.EventDispatchThread.pumpEventsForHierarchy(java.awt.Conditional, java.awt.Component)
          EventDispatchThread.java:98
     void java.awt.Dialog.show()
          Dialog.java:380
     void java.awt.Component.show(boolean)
          Component.java:946
     void java.awt.Component.setVisible(boolean)
          Component.java:903
     void oracle.jbo.dt.ui.main.dlg.DtjDialog.setVisible(boolean)
          DtjDialog.java:137
     void oracle.jbo.dt.ui.main.dlg.DtjMddWizardDialog.setVisible(boolean)
          DtuWizard.java:1922
     boolean oracle.bali.ewt.dialog.JEWTDialog.runDialog()
     boolean oracle.jbo.dt.ui.main.dlg.DtjDialog.showDialog()
          DtjDialog.java:115
     boolean oracle.jbo.dt.ui.main.dlg.DtjMddWizardDialog.showDialog()
          DtuWizard.java:1881
     void oracle.jbo.dt.ui.main.dlg.DtuWizard.createMddWizard()
          DtuWizard.java:422
     void oracle.jbo.dt.ui.main.dlg.DtuWizard.setVisible(boolean)
          DtuWizard.java:276
     boolean oracle.jbo.dt.ui.main.dlg.DtuWizard.showDialog()
          DtuWizard.java:254
     oracle.jbo.dt.objects.JboAppModule oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeAMWizard(java.awt.Frame, oracle.jbo.dt.objects.JboPackage, oracle.jbo.dt.objects.JboAppModule)
          JdxMenuManager.java:748
     oracle.jbo.dt.objects.JboAppModule oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeAppModuleWizard(oracle.jbo.dt.objects.JboPackage, oracle.jbo.dt.objects.JboAppModule)
          JdxMenuManager.java:735
     void oracle.jbo.dt.ui.main.DtuMenuManager.doEditMenuAction(oracle.jbo.dt.objects.JboNamedObject)
          DtuMenuManager.java:1127
     boolean oracle.jbo.dt.jdevx.ui.JdxMenuManager.handleDefaultAction(oracle.ide.addin.Context)
          JdxMenuManager.java:349
     boolean oracle.ide.ContextMenu.fireDefaultAction(oracle.ide.addin.Context)
          ContextMenu.java:343
     void oracle.ideimpl.explorer.BaseTreeExplorer.fireDefaultAction(java.awt.event.InputEvent)
          BaseTreeExplorer.java:1202
     void oracle.ideimpl.explorer.BaseTreeExplorer.dblClicked(java.awt.event.MouseEvent)
          BaseTreeExplorer.java:1448
     void oracle.ideimpl.explorer.BaseTreeExplorer.mouseReleased(java.awt.event.MouseEvent)
          BaseTreeExplorer.java:1469
     void oracle.ideimpl.explorer.CustomTree.processMouseEvent(java.awt.event.MouseEvent)
          CustomTree.java:171
     void java.awt.Component.processEvent(java.awt.AWTEvent)
          Component.java:3544
     void java.awt.Container.processEvent(java.awt.AWTEvent)
          Container.java:1164
     void java.awt.Component.dispatchEventImpl(java.awt.AWTEvent)
          Component.java:2593
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1213
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.LightweightDispatcher.retargetMouseEvent(java.awt.Component, int, java.awt.event.MouseEvent)
          Container.java:2451
     boolean java.awt.LightweightDispatcher.processMouseEvent(java.awt.event.MouseEvent)
          Container.java:2216
     boolean java.awt.LightweightDispatcher.dispatchEvent(java.awt.AWTEvent)
          Container.java:2125
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1200
     void java.awt.Window.dispatchEventImpl(java.awt.AWTEvent)
          Window.java:922
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.EventQueue.dispatchEvent(java.awt.AWTEvent)
          EventQueue.java:339
     boolean java.awt.EventDispatchThread.pumpOneEventForHierarchy(java.awt.Component)
          EventDispatchThread.java:131
     void java.awt.EventDispatchThread.pumpEventsForHierarchy(java.awt.Conditional, java.awt.Component)
          EventDispatchThread.java:98
     void java.awt.EventDispatchThread.pumpEvents(java.awt.Conditional)
          EventDispatchThread.java:93
     void java.awt.EventDispatchThread.run()
          EventDispatchThread.java:85And when I try to delete a ViewLink involing this ViewObject, I get this error:
Error deleting components:QntQstFkLink
java.lang.NullPointerException
     void oracle.jbo.dt.objects.JboAttribute.generateAttributeImports(java.lang.Object)
          JboAttribute.java:1507
     int oracle.jbo.dt.objects.JboView.generateAttributeMethods(int, java.lang.Object[], java.lang.StringBuffer)
          JboView.java:2621
     void oracle.jbo.dt.objects.JboView.createViewRowFile()
          JboView.java:1902
     void oracle.jbo.dt.objects.JboView.saveToJavaFile(boolean, boolean)
          JboView.java:1807
     void oracle.jbo.dt.objects.JboBaseObject.saveObject(boolean, boolean)
          JboBaseObject.java:2065
     void oracle.jbo.dt.objects.JboView.saveObject(boolean, boolean)
          JboView.java:1713
     void oracle.jbo.dt.objects.JboViewLink.deleteAssociation(boolean)
          JboViewLink.java:825
     void oracle.jbo.dt.objects.JboViewLink.removeObject(boolean)
          JboViewLink.java:777
     boolean oracle.jbo.dt.ui.main.DtuMenuManager.deleteObject(java.awt.Component, oracle.jbo.dt.objects.JboBaseObject, boolean)
          DtuMenuManager.java:1403
     void oracle.jbo.dt.ui.main.DtuMenuManager.deleteObject(oracle.jbo.dt.objects.JboNamedObject, boolean)
          DtuMenuManager.java:1341
     void oracle.jbo.dt.ui.main.DtuMenuManager.doMenuAction(java.lang.String)
          DtuMenuManager.java:1017
     void oracle.jbo.dt.jdevx.ui.JdxMenuManager.doMenuAction(java.lang.String)
          JdxMenuManager.java:533
     void oracle.jbo.dt.ui.main.DtuMenuManager.doAction(java.lang.String)
          DtuMenuManager.java:838
     void oracle.jbo.dt.ui.main.DtuMenuManager.doAction(oracle.jbo.dt.objects.JboApplication, java.lang.Object, java.lang.String)
          DtuMenuManager.java:823
     void oracle.jbo.dt.jdevx.ui.JdxMenuManager.doActionPerformed(java.awt.event.ActionEvent)
          JdxMenuManager.java:391
     void oracle.jbo.dt.jdevx.ui.JdxMenuInvoker.run()
          JdxMenuManager.java:1076
     void java.awt.event.InvocationEvent.dispatch()
          InvocationEvent.java:154
     void java.awt.EventQueue.dispatchEvent(java.awt.AWTEvent)
          EventQueue.java:337
     boolean java.awt.EventDispatchThread.pumpOneEventForHierarchy(java.awt.Component)
          EventDispatchThread.java:131
     void java.awt.EventDispatchThread.pumpEventsForHierarchy(java.awt.Conditional, java.awt.Component)
          EventDispatchThread.java:98
     void java.awt.EventDispatchThread.pumpEvents(java.awt.Conditional)
          EventDispatchThread.java:93
     void java.awt.EventDispatchThread.run()
          EventDispatchThread.java:85I don't know how this all happened, but it may or may not have something to do with when I last synchronized the BC4J project with our database. That is, the synchronization process didn't display any error messages or anything, but I'd say that I first noticed these problems since then.
If there's anyone out there who could shed some light on this problem, obviously I'd be very grateful.
Regards,
Arno

More info:
The problem occurs on the first model package that is loaded and always on the same VO of each package.
Flow:
Before closing JDev minimize all model packages in the Application navigator.
Reopen JDev 10.1.2.
Wait for end of synchronization.
Now expand a model package by clicking on the dir structure in the app navigator.
The content doesn't display immediately on the first expanded package, instead the text loading ... is displayed and then the exception is thrown.
JDev does an operation on loading the first model package of an application that causes the problem.
The problem occurs only when the package has a certain number of objects
Opening ToyStore model package is ok but in my app, on the FIRST package opening the error occurs, strange don't you think?
I tried to modify the JDev JVM heap params but it didn't help.
I tried opening Toystore model and then mine but it didn't help.
I tried deactivating Antivirus but it didn't help.
Example of Package composition: has 54 XML files on a total of 111 files (java files included)
YOUR HELP IS NEEDED!
Thanks
Fred
Complete stack trace:
oracle.jbo.dt.objects.JboException: Entity Attribute for this View Attribute cannot be found.
     at oracle.jbo.dt.objects.JboException.throwException(JboException.java:87)
     at oracle.jbo.dt.objects.JboViewAttr.loadResolveReferencesXML(JboViewAttr.java:957)
     at oracle.jbo.dt.objects.JboBaseObject.loadResolveReferencesChildren(JboBaseObject.java:1555)
     at oracle.jbo.dt.objects.JboView.loadResolveReferencesXML(JboView.java:5447)
     at oracle.jbo.dt.objects.JboPackage.loadResolveReferencesXML(JboPackage.java:1089)
     at oracle.jbo.dt.objects.JboPackage.loadFromXMLFile(JboPackage.java:831)
     at oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile(JboBaseObject.java:2175)
     at oracle.jbo.dt.objects.JboPackage.loadFromXMLFile(JboPackage.java:777)
     at oracle.jbo.dt.objects.JboPackage.checkForLoad(JboPackage.java:452)
     at oracle.jbo.dt.objects.JboPackage.findContainedObjectByName(JboPackage.java:441)
     at oracle.jbo.dt.objects.JboPackage.findObjectByName(JboPackage.java:1677)
     at oracle.jbo.dt.objects.JboApplication.findContainerChildObject(JboApplication.java:856)
     at oracle.jbo.dt.objects.JboApplication.findObjectByName(JboApplication.java:765)
     at oracle.jbo.dt.objects.JboApplication.findObjectByName(JboApplication.java:737)
     at oracle.jbo.dt.objects.JboObjectReference.loadResolveReferencesXML(JboObjectReference.java:197)
     at oracle.jbo.dt.objects.JboObjectReference.getReferencedObject(JboObjectReference.java:73)
     at oracle.jbo.dt.objects.JboBaseObject.getSuperObject(JboBaseObject.java:693)
     at oracle.jbo.dt.objects.JboView.isEjbFinderView(JboView.java:1671)
     at oracle.jbo.dt.objects.JboView.isEJBFinderView(JboView.java:1632)
     at oracle.jbo.dt.objects.JboView.setGenerateCollectionClass(JboView.java:6081)
     at oracle.jbo.dt.objects.JboView.readContents(JboView.java:5283)
     at oracle.jbo.dt.objects.JboNamedObject.loadFromXMLFile(JboNamedObject.java:543)
     at oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile(JboBaseObject.java:2283)
     at oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile(JboBaseObject.java:2276)
     at oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile(JboBaseObject.java:2252)
     at oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile(JboBaseObject.java:2175)
     at oracle.jbo.dt.objects.JboPackage.loadFromXMLFile(JboPackage.java:820)
     at oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile(JboBaseObject.java:2175)
     at oracle.jbo.dt.objects.JboPackage.loadFromXMLFile(JboPackage.java:777)
     at oracle.jbo.dt.objects.JboPackage.checkForLoad(JboPackage.java:452)
     at oracle.jbo.dt.objects.JboPackage.findContainedObjectByName(JboPackage.java:441)
     at oracle.jbo.dt.objects.JboPackage.findObjectByName(JboPackage.java:1677)
     at oracle.jbo.dt.objects.JboApplication.findContainerChildObject(JboApplication.java:856)
     at oracle.jbo.dt.objects.JboApplication.findObjectByName(JboApplication.java:765)
     at oracle.jbo.dt.objects.JboApplication.findObjectByName(JboApplication.java:737)
     at oracle.jbo.dt.objects.JboObjectReference.loadResolveReferencesXML(JboObjectReference.java:197)
     at oracle.jbo.dt.objects.JboObjectReference.getReferencedObject(JboObjectReference.java:73)
     at oracle.jbo.dt.objects.JboBaseObject.getSuperObject(JboBaseObject.java:693)
     at oracle.jbo.dt.objects.JboView.isEjbFinderView(JboView.java:1671)
     at oracle.jbo.dt.objects.JboView.isEJBFinderView(JboView.java:1632)
     at oracle.jbo.dt.objects.JboView.setGenerateCollectionClass(JboView.java:6081)
     at oracle.jbo.dt.objects.JboView.readContents(JboView.java:5283)
     at oracle.jbo.dt.objects.JboNamedObject.loadFromXMLFile(JboNamedObject.java:543)
     at oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile(JboBaseObject.java:2283)
     at oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile(JboBaseObject.java:2276)
     at oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile(JboBaseObject.java:2252)
     at oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile(JboBaseObject.java:2175)
     at oracle.jbo.dt.objects.JboPackage.loadFromXMLFile(JboPackage.java:820)
     at oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile(JboBaseObject.java:2175)
     at oracle.jbo.dt.objects.JboPackage.loadFromXMLFile(JboPackage.java:777)
     at oracle.jbo.dt.objects.JboPackage.checkForLoad(JboPackage.java:452)
     at oracle.jbo.dt.jdevx.JdvJpxNode.update(JdvJpxNode.java:394)
     at oracle.ide.IdeSubject.notifyObservers(IdeSubject.java:215)
     at oracle.ide.model.PackageFolder.notifyObservers(PackageFolder.java:215)
     at oracle.ide.addin.UpdateMessage.fireObjectOpened(UpdateMessage.java:543)
     at oracle.ide.model.PackageFolder.getChildren(PackageFolder.java:448)
     at oracle.ideimpl.explorer.ExplorerNode.getChildNodes(ExplorerNode.java:332)
     at oracle.ideimpl.explorer.BaseTreeExplorer.addChildren(BaseTreeExplorer.java:342)
     at oracle.ideimpl.explorer.BaseTreeExplorer.open(BaseTreeExplorer.java:902)
     at oracle.ide.explorer.ExplorerContextUtil.checkExpansionState(ExplorerContextUtil.java:195)
     at oracle.ide.explorer.ExplorerContextUtil.checkExpansionState(ExplorerContextUtil.java:206)
     at oracle.ide.explorer.ExplorerContextUtil.checkExpansionState(ExplorerContextUtil.java:206)
     at oracle.ide.explorer.ExplorerContextUtil.checkExpansionState(ExplorerContextUtil.java:206)
     at oracle.ide.explorer.ExplorerContextUtil.checkExpansionState(ExplorerContextUtil.java:206)
     at oracle.ide.explorer.ExplorerContextUtil.restoreExpansionState(ExplorerContextUtil.java:154)
     at oracle.ideri.navigator.DefaultNavigatorWindow$4.run(DefaultNavigatorWindow.java:1371)
     at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:178)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:454)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)

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    Procedure
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    For MS Word 2010
    Implement the code corrections of the note 1452849.
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    Alexander,
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    Just for the record:
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