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just produced a build path error in a java project (missing build path entry), indicated by a big red exclamation mark. in the package view all of a sudden the little triangle indicating "expandable" disappeared leaving w/o the ability to expand the project. in .metadata/.log there's a bit possibly related: !ENTRY org.eclipse.ui.workbench 2 0 2011-07-01 11:51:24.048 !MESSAGE A handler conflict occurred. This may disable some commands. !SUBENTRY 1 org.eclipse.ui.workbench 2 0 2011-07-01 11:51:24.048 !MESSAGE Conflict for 'org.eclipse.compare.copyAllLeftToRight': HandlerActivation(commandId=org.eclipse.compare.copyAllLeftToRight, handler=ActionHandler(org.eclipse.compare.contentmergeviewer.ContentMergeViewer$8@c68740c), expression=AndExpression(ActivePartExpression(org.eclipse.compare.internal.CompareEditor@57488b9c),WorkbenchWindowExpression(org.eclipse.ui.internal.WorkbenchWindow@1769c398)),sourcePriority=1064960) HandlerActivation(commandId=org.eclipse.compare.copyAllLeftToRight, handler=ActionHandler(org.eclipse.compare.contentmergeviewer.ContentMergeViewer$8@1d9ac631), expression=AndExpression(ActivePartExpression(org.eclipse.compare.internal.CompareEditor@57488b9c),WorkbenchWindowExpression(org.eclipse.ui.internal.WorkbenchWindow@1769c398)),sourcePriority=1064960) !ENTRY org.eclipse.ui.workbench 2 0 2011-07-01 11:51:24.048 !MESSAGE A handler conflict occurred. This may disable some commands. !SUBENTRY 1 org.eclipse.ui.workbench 2 0 2011-07-01 11:51:24.048 !MESSAGE Conflict for 'org.eclipse.compare.copyAllRightToLeft': HandlerActivation(commandId=org.eclipse.compare.copyAllRightToLeft, handler=ActionHandler(org.eclipse.compare.contentmergeviewer.ContentMergeViewer$9@2f6c64dd), expression=AndExpression(ActivePartExpression(org.eclipse.compare.internal.CompareEditor@57488b9c),WorkbenchWindowExpression(org.eclipse.ui.internal.WorkbenchWindow@1769c398)),sourcePriority=1064960) HandlerActivation(commandId=org.eclipse.compare.copyAllRightToLeft, handler=ActionHandler(org.eclipse.compare.contentmergeviewer.ContentMergeViewer$9@7552017d), expression=AndExpression(ActivePartExpression(org.eclipse.compare.internal.CompareEditor@57488b9c),WorkbenchWindowExpression(org.eclipse.ui.internal.WorkbenchWindow@1769c398)),sourcePriority=1064960) !ENTRY org.eclipse.jdt.ui 4 10001 2011-07-01 12:07:52.045 !MESSAGE Internal Error !STACK 1 Java Model Exception: Java Model Status [/home/mine/EWS/Project/foldera/folderb/folderc/foo0.jar is not on its project's build path] at org.eclipse.jdt.internal.core.PackageFragmentRoot.getRawClasspathEntry(PackageFragmentRoot.java:553) at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.getSelectedPackageFragmentRoot(LibrariesWorkbookPage.java:369) at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.updateEnabledState(LibrariesWorkbookPage.java:602) at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.libaryPageSelectionChanged(LibrariesWorkbookPage.java:595) at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.access$1(LibrariesWorkbookPage.java:594) at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage$LibrariesAdapter.selectionChanged(LibrariesWorkbookPage.java:202) at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField.doListSelected(TreeListDialogField.java:897) at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField$TreeViewerAdapter.selectionChanged(TreeListDialogField.java:882) at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:162) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175) at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:160) at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2162) at org.eclipse.jface.viewers.StructuredViewer.handleSelect(StructuredViewer.java:1190) at org.eclipse.jface.viewers.StructuredViewer$4.widgetSelected(StructuredViewer.java:1220) at org.eclipse.jface.util.OpenStrategy.fireSelectionEvent(OpenStrategy.java:228) at org.eclipse.jface.util.OpenStrategy.access$4(OpenStrategy.java:222) at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:389) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3540) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3161) at org.eclipse.jface.window.Window.runEventLoop(Window.java:825) at org.eclipse.jface.window.Window.open(Window.java:801) at org.eclipse.ui.dialogs.PropertyDialogAction.run(PropertyDialogAction.java:157) at org.eclipse.jface.action.Action.runWithEvent(Action.java:498) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501) at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3540) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3161) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) 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:369) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 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:597) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:620) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575) at org.eclipse.equinox.launcher.Main.run(Main.java:1408) at org.eclipse.equinox.launcher.Main.main(Main.java:1384) -- Configuration Details -- Product: Eclipse 1.3.2.20110218-0812 (org.eclipse.epp.package.jee.product) Installed Features: org.eclipse.platform 3.6.2.r362_v20110210-9gF78Gs1FrIGnHDHWkEcopoN8AmxeZflGDGKQi
> the package view Do you mean the 'Package Explorer'? Can you attach the project (or a smaller version of it)? I cannot reproduce this using R3.7.
(In reply to comment #1) > Can you attach the project (or a smaller version of it)? I cannot reproduce > this using R3.7. Ping.
yes, package explorer. sorry, no i can't attach a project. it's not one single project but i've seen it on several - but not for a while now. i experienced it when updating a project from svn after someone else switched libraries w/o updating the classpath, so that in the process of updating classpath errors occured.
If it happens, does the problem persist on restart? Is there anything in the .log when you try to expand? The stack trace from comment 0 does not belong to expansion in the Package Explorer.
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