3.0EA4: NPE when open package body from file.

Question

What I did:
1. start sqldeveloper
2. goto Files tab
3. dblclick a package body file (a_pkg.pkb) in recent file list.
4. dblclick another package spec file (a_pkg.pks) in recent file list.
5. error !
Here is the stack trace.
java.lang.NullPointerException
     at oracle.ideimpl.editor.EditorManagerImpl.createEditor(EditorManagerImpl.java:1420)
     at oracle.ideimpl.editor.EditorManagerImpl.createEditor(EditorManagerImpl.java:1337)
     at oracle.ideimpl.editor.EditorManagerImpl.openEditor(EditorManagerImpl.java:1263)
     at oracle.ideimpl.navigator.OpenEditorController.whenOpenEditor(OpenEditorController.java:41)
     at oracle.ideimpl.navigator.OpenEditorContextMenuListener.handleDefaultAction(OpenEditorContextMenuListener.java:51)
     at oracle.ide.controller.ContextMenuListenersHook$LazyContextMenuListener.handleDefaultAction(ContextMenuListenersHook.java:200)
     at oracle.ide.controller.ContextMenu.fireDefaultAction(ContextMenu.java:434)
     at oracle.ideimpl.explorer.BaseTreeExplorer.fireDefaultAction(BaseTreeExplorer.java:1835)
     at oracle.ideimpl.explorer.BaseTreeExplorer.dblClicked(BaseTreeExplorer.java:2176)
     at oracle.ideimpl.explorer.BaseTreeExplorer.mouseReleased(BaseTreeExplorer.java:2205)
     at oracle.ideimpl.explorer.CustomTree.processMouseEvent(CustomTree.java:211)
     at java.awt.Component.processEvent(Component.java:5806)
     at java.awt.Container.processEvent(Container.java:2059)
     at java.awt.Component.dispatchEventImpl(Component.java:4413)
     at java.awt.Container.dispatchEventImpl(Container.java:2118)
     at java.awt.Component.dispatchEvent(Component.java:4244)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322)
     at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3986)
     at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916)
     at java.awt.Container.dispatchEventImpl(Container.java:2102)
     at java.awt.Window.dispatchEventImpl(Window.java:2441)
     at java.awt.Component.dispatchEvent(Component.java:4244)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
     at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)

Answer 1

I have several schemas but let us just look at the 2 .
I have open connections to both of the 2 schemas.
I do some work in the A schema and then returns
to the B-Schema, but forget to change the connection in the connection drop down list.
So now my connection points at the A-schema.
I open a package body file (from the file system !!!! not from the database)
do some corrections in the package body and then compiles the package body (belonging to the B-schema)
erroneously in the A-schema. I do not do this on purpose, but because i forgot to change the connection
and the connection in the "drop-down connection list" still points to the A-schema and I'm not prompted for
a password as the connection is open.)
The compiler compiles my package body in the A-schema with an error and tells me "package spec"
does not exist which is true - the package spec exists in the B-schema and not in the A-schema.
Therefore I choose the B-schema connection in the connection drop-down list in order to compile
the package body in the right schema (the B-schema).
Now I receive a message "your priviliges are insufficient" - which they are not.
The only way I can get back into business is to close down sqldeveloper re-open it and now
compile the package body in the right schema.
Sqldeveloper compiles the pck-body in the A-schema as it was told to do, it is not a random schema
I have to remove the pck-body afterwards !!
The annoying thing about this is I have to close down sqldeveloper in order to be able to compile my package.
I do not have explicit schema object reference in my declaration
regards