[beming]

Eclipse 3.1 + jdk 1.4.2

before I use MyEclipse 4.0M3, my VE (Eclipse Visual Editor, Eclipse’s VE) work fine.
and today I upgrade the MyEclipse to 4.0GA, and the VE can’t work, when I disable the MyEclipse , restart Eclipse and then the VE work normally!

I search the same problem by Google, and found it in dev.eclipse.org, someone meet the problem too.

I saw the Eclipse log file, and find the error message:

!ENTRY org.eclipse.ui 4 4 2005-08-30 17:08:38.687
!MESSAGE Unhandled event loop exception

!ENTRY org.eclipse.ui 4 0 2005-08-30 17:08:38.703
!MESSAGE java.lang.NoClassDefFoundError
!STACK 0
java.lang.NoClassDefFoundError
at org.eclipse.ve.internal.java.codegen.editorpart.JavaVisualEditorPart.init(JavaVisualEditorPart.java:256)
at org.eclipse.ui.internal.EditorManager.createSite(EditorManager.java:773)
at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:572)
at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:365)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:552)
at org.eclipse.ui.internal.PartPane.requestActivation(PartPane.java:239)
at org.eclipse.ui.internal.EditorPane.requestActivation(EditorPane.java:88)
at org.eclipse.ui.internal.presentations.PresentablePart.setFocus(PresentablePart.java:137)
at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation$1.handleEvent(TabbedStackPresentation.java:92)
at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:267)
at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:272)
at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.handleMouseDown(AbstractTabFolder.java:342)
at org.eclipse.ui.internal.presentations.util.AbstractTabFolder$3.mouseDown(AbstractTabFolder.java:79)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:133)
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(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
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)

[Riyad Kalla]

You may need to upgrade your release of VE, the versions of EMF/GEF/JEM that we ship now are the final releases that the current VE uses.

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