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Build Identifier: I20100608-0911 1.I have installed the Web Page Editor (optional) feature from the Installed new software wizard. 2.Only the Web Page Editor was installed since all its dependencies were already in place. 3.After the installation completed I didn`t restart eclipse, but I pressed "Apply settings". Result: An number of errors were logged in the Error log: org.eclipse.core.runtime.InvalidRegistryObjectException: Invalid registry object at org.eclipse.core.internal.registry.RegistryObjectManager.basicGetObject(RegistryObjectManager.java:272) at org.eclipse.core.internal.registry.RegistryObjectManager.getObject(RegistryObjectManager.java:262) at org.eclipse.core.internal.registry.ConfigurationElementHandle.getConfigurationElement(ConfigurationElementHandle.java:26) at org.eclipse.core.internal.registry.ConfigurationElementHandle.getAttribute(ConfigurationElementHandle.java:34) at org.eclipse.jdt.internal.ui.filters.FilterDescriptor.getTargetId(FilterDescriptor.java:193) at org.eclipse.jdt.internal.ui.filters.FilterDescriptor.getFilterDescriptors(FilterDescriptor.java:95) at org.eclipse.jdt.ui.actions.CustomFiltersActionGroup.<init>(CustomFiltersActionGroup.java:260) at org.eclipse.jdt.internal.ui.javaeditor.JavaOutlinePage.createControl(JavaOutlinePage.java:792) at org.eclipse.ui.views.contentoutline.ContentOutline.doCreatePage(ContentOutline.java:137) at org.eclipse.ui.part.PageBookView.createPage(PageBookView.java:408) at org.eclipse.ui.part.PageBookView.partActivated(PageBookView.java:751) at org.eclipse.ui.part.PageBookView$4.partActivated(PageBookView.java:1010) at org.eclipse.ui.internal.PartListenerList2$1.run(PartListenerList2.java:70) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.runtime.Platform.run(Platform.java:888) at org.eclipse.ui.internal.PartListenerList2.fireEvent(PartListenerList2.java:55) at org.eclipse.ui.internal.PartListenerList2.firePartActivated(PartListenerList2.java:68) at org.eclipse.ui.internal.PartService.firePartActivated(PartService.java:192) at org.eclipse.ui.internal.PartService.setActivePart(PartService.java:306) at org.eclipse.ui.internal.WorkbenchPagePartList.fireActivePartChanged(WorkbenchPagePartList.java:57) at org.eclipse.ui.internal.PartList.setActivePart(PartList.java:136) at org.eclipse.ui.internal.WorkbenchPage.setActivePart(WorkbenchPage.java:3537) at org.eclipse.ui.internal.WorkbenchPage.requestActivation(WorkbenchPage.java:3077) at org.eclipse.ui.internal.PartPane.requestActivation(PartPane.java:279) at org.eclipse.ui.internal.EditorPane.requestActivation(EditorPane.java:98) at org.eclipse.ui.internal.PartPane.handleEvent(PartPane.java:237) 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.Widget.sendEvent(Widget.java:1282) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1263) at org.eclipse.swt.widgets.Shell.setActiveControl(Shell.java:1531) at org.eclipse.swt.widgets.Control.gtk_button_press_event(Control.java:2643) at org.eclipse.swt.widgets.Control.gtk_button_press_event(Control.java:2579) at org.eclipse.swt.widgets.Composite.gtk_button_press_event(Composite.java:681) at org.eclipse.swt.widgets.Canvas.gtk_button_press_event(Canvas.java:152) at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1731) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4794) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4372) at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method) at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:8163) at org.eclipse.swt.widgets.Display.eventProc(Display.java:1239) at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method) at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:2224) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3169) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663) 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:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407) at org.eclipse.equinox.launcher.Main.main(Main.java:1383) org.eclipse.core.runtime.InvalidRegistryObjectException: Invalid registry object at org.eclipse.core.internal.registry.RegistryObjectManager.basicGetObject(RegistryObjectManager.java:272) at org.eclipse.core.internal.registry.RegistryObjectManager.getObject(RegistryObjectManager.java:262) at org.eclipse.core.internal.registry.ConfigurationElementHandle.getConfigurationElement(ConfigurationElementHandle.java:26) at org.eclipse.core.internal.registry.ConfigurationElementHandle.getContributor(ConfigurationElementHandle.java:134) at org.eclipse.ui.internal.PluginAction.isOkToCreateDelegate(PluginAction.java:194) at org.eclipse.ui.internal.WWinPluginAction.isOkToCreateDelegate(WWinPluginAction.java:220) at org.eclipse.ui.internal.PluginAction.selectionChanged(PluginAction.java:274) at org.eclipse.ui.internal.PluginAction.selectionChanged(PluginAction.java:299) at org.eclipse.ui.internal.AbstractSelectionService.fireSelection(AbstractSelectionService.java:156) at org.eclipse.ui.internal.AbstractSelectionService$1.selectionChanged(AbstractSelectionService.java:62) 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.text.TextViewer.fireSelectionChanged(TextViewer.java:2728) at org.eclipse.jface.text.TextViewer.selectionChanged(TextViewer.java:2707) at org.eclipse.jface.text.TextViewer$4.widgetSelected(TextViewer.java:1828) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234) 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.Widget.sendEvent(Widget.java:1282) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1267) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1061) at org.eclipse.swt.custom.StyledText.sendSelectionEvent(StyledText.java:8016) at org.eclipse.swt.custom.StyledText.doSelection(StyledText.java:3216) at org.eclipse.swt.custom.StyledText.doMouseSelection(StyledText.java:2831) at org.eclipse.swt.custom.StyledText.doMouseLocationChange(StyledText.java:2814) at org.eclipse.swt.custom.StyledText.handleMouseMove(StyledText.java:6058) at org.eclipse.swt.custom.StyledText$7.handleEvent(StyledText.java:5656) 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:3552) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3171) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663) 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:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407) at org.eclipse.equinox.launcher.Main.main(Main.java:1383) Reproducible: Sometimes