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I had been using 4.0 I20100627-1659 for a while and decided to restart. This occurred on the way down (with a few error dialogs). null Error Mon Jun 28 12:36:45 EDT 2010 Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench". org.eclipse.e4.core.di.InjectionException: java.lang.NullPointerException at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:49) at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:749) at org.eclipse.e4.core.internal.di.InjectorImpl.uninject(InjectorImpl.java:147) at org.eclipse.e4.core.internal.di.InjectorImpl.disposed(InjectorImpl.java:309) at org.eclipse.e4.core.internal.di.Requestor.disposed(Requestor.java:110) at org.eclipse.e4.core.internal.contexts.ContextObjectSupplier$ContextInjectionListener.update(ContextObjectSupplier.java:61) at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:87) at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.doHandleInvalid(TrackableComputationExt.java:50) at org.eclipse.e4.core.internal.contexts.Computation.handleInvalid(Computation.java:59) at org.eclipse.e4.core.internal.contexts.EclipseContext.dispose(EclipseContext.java:191) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.clearContext(PartRenderingEngine.java:550) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:502) at org.eclipse.ui.internal.WorkbenchWindow.hardClose(WorkbenchWindow.java:1384) at org.eclipse.ui.internal.WorkbenchWindow.busyClose(WorkbenchWindow.java:1085) at org.eclipse.ui.internal.WorkbenchWindow.access$3(WorkbenchWindow.java:1064) at org.eclipse.ui.internal.WorkbenchWindow$5.run(WorkbenchWindow.java:1111) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchWindow.close(WorkbenchWindow.java:1109) at org.eclipse.ui.internal.Workbench$13.run(Workbench.java:1019) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.Workbench.busyClose(Workbench.java:1013) at org.eclipse.ui.internal.Workbench.access$11(Workbench.java:947) at org.eclipse.ui.internal.Workbench$14.run(Workbench.java:1089) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.Workbench.close(Workbench.java:1087) at org.eclipse.ui.internal.Workbench.close(Workbench.java:1060) at org.eclipse.ui.internal.WorkbenchWindow.busyClose(WorkbenchWindow.java:1082) at org.eclipse.ui.internal.WorkbenchWindow.access$3(WorkbenchWindow.java:1064) at org.eclipse.ui.internal.WorkbenchWindow$5.run(WorkbenchWindow.java:1111) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchWindow.close(WorkbenchWindow.java:1109) at org.eclipse.ui.internal.WorkbenchWindow.close(WorkbenchWindow.java:1125) at org.eclipse.ui.internal.WorkbenchWindow$3.close(WorkbenchWindow.java:406) at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer$8.shellClosed(WBWRenderer.java:421) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:98) 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) at org.eclipse.swt.widgets.Shell.closeWidget(Shell.java:616) at org.eclipse.swt.widgets.Shell.close(Shell.java:612) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.stop(PartRenderingEngine.java:710) at org.eclipse.ui.internal.Workbench.restart(Workbench.java:2193) at org.eclipse.ui.internal.handlers.RestartWorkbenchHandler.execute(RestartWorkbenchHandler.java:31) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293) at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:56) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:600) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:42) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:192) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:169) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:101) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:135) at org.eclipse.e4.ui.workbench.renderers.swt.HandledMenuItemRenderer$2.widgetSelected(HandledMenuItemRenderer.java:164) 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.Display.runDeferredEvents(Display.java:3552) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3171) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:658) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:579) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:102) at org.eclipse.ui.internal.Workbench$3.run(Workbench.java:537) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:521) 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:48) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:600) 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) Caused by: java.lang.NullPointerException at org.eclipse.e4.ui.internal.workbench.SelectionServiceImpl.preDestroy(SelectionServiceImpl.java:86) at sun.reflect.GeneratedMethodAccessor47.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:600) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:42) ... 81 more
not able to reproduce