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[wtp-dev] WTP crashes often

Hi,

I work with the build M20070921-1145 on a Windows XP PC and my eclipse WTP 
crashes regularly. I found the following error in the log file:
org.eclipse.core.runtime.AssertionFailedException: assertion failed:
	at org.eclipse.core.runtime.Assert.isTrue(Assert.java:109)
	at org.eclipse.core.runtime.Assert.isTrue(Assert.java:95)
	at 
org.eclipse.ui.internal.texteditor.quickdiff.DocumentLineDiffer.handleAboutToBeChanged(DocumentLineDiffer.java:775)
	at 
org.eclipse.ui.internal.texteditor.quickdiff.DocumentLineDiffer.documentAboutToBeChanged(DocumentLineDiffer.java:744)
	at 
org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument._fireDocumentAboutToChange(BasicStructuredDocument.java:390)
	at 
org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.fireDocumentAboutToChanged(BasicStructuredDocument.java:1122)
	at 
org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.internalReplaceText(BasicStructuredDocument.java:1907)
	at 
org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.replaceText(BasicStructuredDocument.java:2394)
	at 
org.eclipse.wst.sse.core.internal.text.JobSafeStructuredDocument.access$0(JobSafeStructuredDocument.java:1)
	at 
org.eclipse.wst.sse.core.internal.text.JobSafeStructuredDocument$1.run(JobSafeStructuredDocument.java:98)
	at 
org.eclipse.wst.sse.ui.EditorExecutionContext.execute(EditorExecutionContext.java:42)
	at 
org.eclipse.wst.sse.core.internal.text.JobSafeStructuredDocument.replaceText(JobSafeStructuredDocument.java:109)
	at 
org.eclipse.wst.xml.core.internal.document.XMLModelUpdater.replaceSource(XMLModelUpdater.java:1608)
	at 
org.eclipse.wst.xml.core.internal.document.XMLModelUpdater.changeAttrValue(XMLModelUpdater.java:186)
	at 
org.eclipse.wst.xml.core.internal.document.XMLModelUpdater.changeValue(XMLModelUpdater.java:596)
	at 
org.eclipse.wst.xml.core.internal.document.DOMModelImpl.valueChanged(DOMModelImpl.java:903)
	at 
org.eclipse.wst.xml.core.internal.document.AttrImpl.notifyValueChanged(AttrImpl.java:607)
	at 
org.eclipse.wst.xml.core.internal.document.AttrImpl.setValueSource(AttrImpl.java:745)
	at 
org.eclipse.wst.xml.core.internal.document.AttrImpl.setValue(AttrImpl.java:726)
	at 
org.eclipse.wst.xml.core.internal.document.ElementImpl.setAttribute(ElementImpl.java:1190)
	at 
org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.primUpdateDOMFeature(EMF2DOMAdapterImpl.java:1319)
	at 
org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateDOMFeature(EMF2DOMAdapterImpl.java:1551)
	at 
org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.notifyChanged(EMF2DOMAdapterImpl.java:1037)
	at 
org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:247)
	at 
org.eclipse.jst.j2ee.ejb.internal.impl.EJBJarImpl.setVersion(EJBJarImpl.java:392)
	at 
org.eclipse.jst.j2ee.ejb.internal.impl.EJBResourceImpl.syncVersionOfRootObject(EJBResourceImpl.java:215)
	at 
org.eclipse.jst.j2ee.ejb.internal.impl.EJBResourceImpl.setJ2EEVersionID(EJBResourceImpl.java:196)
	at 
org.eclipse.jst.j2ee.common.internal.impl.XMLResourceImpl.setDoctypeValues(XMLResourceImpl.java:138)
	at 
org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOFDocumentType(EMF2DOMAdapterImpl.java:1008)
	at 
org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOFRootFeature(EMF2DOMAdapterImpl.java:953)
	at 
org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.primUpdateMOF(EMF2DOMAdapterImpl.java:929)
	at 
org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOF(EMF2DOMAdapterImpl.java:913)
	at 
org.eclipse.wst.xml.core.internal.emf2xml.EMF2DOMSSEAdapter.notifyChanged(EMF2DOMSSEAdapter.java:224)
	at 
org.eclipse.wst.sse.core.internal.provisional.AbstractNotifier.notify(AbstractNotifier.java:201)
	at 
org.eclipse.wst.xml.core.internal.document.XMLModelNotifierImpl.notifyStructureChanged(XMLModelNotifierImpl.java:392)
	at 
org.eclipse.wst.xml.core.internal.document.XMLModelNotifierImpl.endChanging(XMLModelNotifierImpl.java:180)
	at 
org.eclipse.wst.xml.core.internal.document.DOMModelImpl.changedModel(DOMModelImpl.java:163)
	at 
org.eclipse.wst.sse.core.internal.model.AbstractStructuredModel$DocumentToModelNotifier.nodesReplaced(AbstractStructuredModel.java:152)
	at 
org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument._fireEvent(BasicStructuredDocument.java:602)
	at 
org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.fireStructuredDocumentEvent(BasicStructuredDocument.java:1201)
	at 
org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.internalReplaceText(BasicStructuredDocument.java:1970)
	at 
org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.replaceText(BasicStructuredDocument.java:2394)
	at 
org.eclipse.wst.sse.core.internal.text.JobSafeStructuredDocument.access$0(JobSafeStructuredDocument.java:1)
	at 
org.eclipse.wst.sse.core.internal.text.JobSafeStructuredDocument$1.run(JobSafeStructuredDocument.java:98)
	at 
org.eclipse.wst.sse.ui.EditorExecutionContext.execute(EditorExecutionContext.java:42)
	at 
org.eclipse.wst.sse.core.internal.text.JobSafeStructuredDocument.replaceText(JobSafeStructuredDocument.java:109)
	at 
org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.replaceText(BasicStructuredDocument.java:2390)
	at 
org.eclipse.wst.sse.ui.internal.StructuredDocumentToTextAdapter.replaceTextRange(StructuredDocumentToTextAdapter.java:1187)
	at org.eclipse.swt.custom.StyledText.modifyContent(StyledText.java:5757)
	at org.eclipse.swt.custom.StyledText.sendKeyEvent(StyledText.java:6500)
	at org.eclipse.swt.custom.StyledText.paste(StyledText.java:5805)
	at org.eclipse.jface.text.TextViewer.doOperation(TextViewer.java:3722)
	at 
org.eclipse.jface.text.source.SourceViewer.doOperation(SourceViewer.java:857)
	at 
org.eclipse.jface.text.source.projection.ProjectionViewer.doOperation(ProjectionViewer.java:1429)
	at 
org.eclipse.wst.sse.ui.internal.StructuredTextViewer.doOperation(StructuredTextViewer.java:375)
	at 
org.eclipse.ui.texteditor.TextOperationAction$1.run(TextOperationAction.java:131)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
	at 
org.eclipse.ui.texteditor.TextOperationAction.run(TextOperationAction.java:129)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
	at org.eclipse.ui.commands.ActionHandler.execute(ActionHandler.java:185)
	at 
org.eclipse.ui.internal.handlers.LegacyHandlerWrapper.execute(LegacyHandlerWrapper.java:109)
	at org.eclipse.core.commands.Command.executeWithChecks(Command.java:475)
	at 
org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:429)
	at 
org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:165)
	at 
org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:470)
	at 
org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:821)
	at 
org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:879)
	at 
org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:568)
	at 
org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:510)
	at 
org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:126)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
	at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1141)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:937)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:962)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:947)
	at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:975)
	at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:971)
	at org.eclipse.swt.widgets.Widget.wmChar(Widget.java:1285)
	at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:3772)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:3672)
	at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:291)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:4351)
	at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2265)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3291)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
	at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
	at 
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
	at 
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at 
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)
	at 
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:169)
	at 
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
	at 
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
	at 
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
	at 
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
	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:508)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:447)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1173)

What is going wrong here and what do I have to do to stablize the eclipse 
WTP?

Thanks for your help and best regards,
Andreas Grund

-- 
Andreas Grund
externer Mitarbeiter Projet GUTS bei Conti
mailto:andreas.grund@xxxxxxxxxx
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Germany

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