[Max]

I’ve red almost every post in all forums about the “unable to create this part due to internal error. Reason for the failure: An unexpected exception was thrown” here are the details for my specific problem:

java.lang.NullPointerException
at com.genuitec.eclipse.struts.editor.model.ModelManager.getGlobalForwardConfigs(ModelManager.java:198)
at com.genuitec.eclipse.struts.editor.modeler.model.StrutsConfigDiagram.synchronizeDiagram(StrutsConfigDiagram.java:450)
at com.genuitec.eclipse.struts.editor.modeler.model.StrutsConfigDiagram.differedSynchronize(StrutsConfigDiagram.java:118)
at com.genuitec.eclipse.struts.editor.multipage.StrutsConfigEditor.createPages(StrutsConfigEditor.java:292)
at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:241)
at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:609)
at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:384)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:552)
at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:283)
at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:126)
at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:268)
at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:391)
at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1102)
at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1051)
at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1256)
at org.eclipse.ui.internal.PartStack.add(PartStack.java:442)
at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:109)
at org.eclipse.ui.internal.EditorSashContainer.addEditor(EditorSashContainer.java:60)
at org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorAreaHelper.java:212)
at org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAreaHelper.java:202)
at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:758)
at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:665)
at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:628)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2360)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2295)
at org.eclipse.ui.internal.WorkbenchPage.access$9(WorkbenchPage.java:2287)
at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2273)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2268)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2249)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:371)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:334)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:251)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:131)
at org.eclipse.jdt.internal.ui.actions.OpenActionUtil.open(OpenActionUtil.java:49)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:169)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:153)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:222)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:198)
at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:296)
at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$4.open(PackageExplorerPart.java:869)
at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:741)
at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044)
at org.eclipse.core.runtime.Platform.run(Platform.java:783)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:148)
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:739)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:968)
at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1067)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:243)
at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:238)
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:277)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3080)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2713)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)
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.core.launcher.Main.invokeFramework(Main.java:334)
at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
at org.eclipse.core.launcher.Main.run(Main.java:973)
at org.eclipse.core.launcher.Main.main(Main.java:948).

Problem description:
I start a new WebProject, add Struts capabilities and edit the struts-config.xml with MyEclipse struts editor (design or source view), add a new forward (or whatever):
1. I do it manually save the file tray to open it again and the above error appears.
2. I use the wizards, no graphics appear in the design view, I save the file, try open it again and the above error appears.

Here is what I have done (Steps):
1. Start MyEclipseIde with –clean option. Same problem
2. Create a new Workspace from scratch. Same problem
3. Download Eclipse SDK 3.1.1
3.1 Download MyEclipseIDE 4.0.3GA
3.2 Fresh install of Eclipse
3.3 Fresh install of MyEclipse
3.4 Create a new Workspace from scratch.
3.5 Repeat (see problem description) and I have ended with the same results. Same problem
4. Remove all installations of Eclipse SDK 3.1.1 and MyEclipse 4.0.3GA
5. Remove installation of JDK 1.5.0_05
6. Reboot my PC
7. Install JDK 1.5.0_05
8. Reboot my PC
9. Fresh install of Eclipse SDK 3.1.1
10. Fresh install of MyEclipse 4.0.3GA
11. Repeat (see problem description) and I have end with the same results. Same problem.
12. Finally FORMAT my Computer and repeat steps 7 throw 11 and end with the same problem.

Here is my Configuration Summary:
*** Date: Sun Oct 30 19:04:53 GMT-05:00 2005

*** System properties:
OS=WindowsXP
OS version=5.1
Java version=1.5.0_05

*** MyEclipse details:
MyEclipse Enterprise Workbench

Version: 4.0.3 GA
Build id: 20051025-4.0.3-GA

*** Eclipse details:
Eclipse SDK

Version: 3.1.1
Build id: M20050929-0840

Eclipse Platform

Version: 3.1.1
Build id: M20050929-0840

Eclipse RCP

Version: 3.1.1
Build id: M20050929-0840

Eclipse Java Development Tools

Version: 3.1.1
Build id: M20050929-0840

Eclipse Plug-in Development Environment

Version: 3.1.1
Build id: M20050929-0840

Eclipse Project SDK

Version: 3.1.1
Build id: M20050929-0840

Eclipse startup command=-os
win32
-ws
win32
-arch
x86
-launcher
I:\Development\eclipse\eclipse.exe
-name
Eclipse
-showsplash
600
-exitdata
c6c_74
-vm
C:\WINDOWS\system32\javaw.exe

Could you please help me? Have I missed something?

Tanx

[Scott Anderson]

First, thanks for all the detail in your post!

The first thing I tried was to replicate the error you’re experiencing.

Here’s what I did:
1) Create a new MyEclipse Web Project called TestProject
2) Select the web project and “Add Struts Capabilities…” using all the default values
3) Double-clicked on struts-config.xml to open it in the MyEclipse Struts Config editor
4) Clicked on the “Add global forward” icon in the design palette and entered “asdf” for the name and “/stuff” for the path
5) Saved the file with Ctrl+S then closed it.
6) Reopened the file by double clicking

In doing this, I did not experience the errors you’re experiencing so something I did must be different. Can you please review my steps (and try them yourself) and see how they differ from what you did to encounter the error? I also used ME 4.0.3 and Eclipse 3.1.1.

[Max]

Hi, tanks for your quick answer, I did follow your instructions to the letter and still have the same problem, however I notice that when i installed jdk1.5 I also copied some libraries I needed in the JAVA_HOME\jre\lib\ext this files are jdts1.1 and log4j 1.2.12. I erase them from the path and every thing seems to be working perfectly now. Could you please replicate this to see if you have the same problems I experience?

Again tanks

[Riyad Kalla]

Tanx,
Our plugins make heavy use of logging libraries, all different versions unfortunately (as some were originally born as open source projects), what was happening is your newer copy of log4j was getting picked up, and when the plugin was attempting to write write a log entry or check for the logging status, it was throwing exceptions pertaining to MethodNotFound and the like. Putting classes in your \lib\ext dir is always a risky business, while it seems easy up front, you can pay down the road with hair-ripping experiences like this.

[Max]

Tank you very much, i’ll have that in mind next time 😯

[Author]

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