Upload of Design Studio SDK extension to BI platform failed

Question

Hi Design Studio (SDK) friends,
I created my own extension via Design Studio 1.3 SDK. It works fine in local mode. Than I uploaded it to our BI platform by using the menu entry "platform extensions" in Design Studio. Nice, it works, even on iPad.
Because of some changes we undeployed / removed this extension from the BI platform (vie Design Studio 1.3).
Now, after correcting the extension we would like to upload it again, but it is not possible. Following error message is shown:
"One or more extensions failed to install
Failed to access plugin JAR file of extension "myOwnExtension" (id: de.mycompany.myOwnExtension)"
Other extensions can still uploaded. System is going to undeploy them and reinstall them without any error.
The extension, which could not be uploaded, works fine in local mode. The correction changes were small, like changes in css-file and in the component.js-file.
Do you have any idea, why the system could not access to the plugin JAR file?
Many thanks for your helping and support.
Kind regards
Patrick
Following the complete Error-Log:
com.sap.ip.bi.zen.connectivity.ConnectivityException: Failed to access plugin JAR file of extension "myOwnExtension" (id: de.mycompany.myOwnExtension)
    at com.sap.ip.bi.zen.backends.bip.BiPlatformSystem.deployExtensions(BiPlatformSystem.java:1999)
    at com.sap.ip.bi.zen.ui.internal.dialogs.sdk.PlatformExtensionsDialog.installExtensions(PlatformExtensionsDialog.java:278)
    at com.sap.ip.bi.zen.ui.internal.dialogs.sdk.PlatformExtensionsDialog$5.run(PlatformExtensionsDialog.java:196)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at com.sap.ip.bi.zen.ui.internal.dialogs.sdk.PlatformExtensionsDialog.runInstallExtensionsAndShowWarning(PlatformExtensionsDialog.java:192)
    at com.sap.ip.bi.zen.ui.internal.dialogs.sdk.PlatformExtensionsDialog.installButtonClicked(PlatformExtensionsDialog.java:151)
    at com.sap.ip.bi.zen.ui.internal.dialogs.sdk.PlatformExtensionsDialog$2.installClicked(PlatformExtensionsDialog.java:98)
    at com.sap.ip.bi.zen.ui.internal.dialogs.sdk.SDKExtensionsTable$2.widgetSelected(SDKExtensionsTable.java:126)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)
    at org.eclipse.jface.window.Window.runEventLoop(Window.java:826)
    at org.eclipse.jface.window.Window.open(Window.java:802)
    at com.sap.ip.bi.zen.ui.internal.dialogs.ZenTrayDialog.open(ZenTrayDialog.java:112)
    at com.sap.ip.bi.zen.ui.internal.util.SdkHelper.showDeployExtensionsDialog(SdkHelper.java:75)
    at com.sap.ip.bi.zen.ui.backendspecific.BackendSpecificUiHandlerAdapter$2.widgetSelected(BackendSpecificUiHandlerAdapter.java:122)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at com.sap.ip.bi.zen.ui.internal.application.ZenApplication.start(ZenApplication.java:36)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1450)

Answer 1

Hello together,
I could solve this issue by myself.
I found following discussion:
Issue with Design Studio SDK 1.2 Component development
Because design studio uninstalled my own extension not correctly the *.jar file was missing in the folder:
C:\Users\<myUser>\Analysis-config\plugins
and could not found, while uploading the extension to BIP.
Steps for solving:
1. uninstalling the extension
2. deleting all files in the folder (see above)
3. reinstalling the extension
4. uploading the extension to BIP (it work again)
Kind regards and thanks to all, who thought about my problem.
Patrick