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When an exception occurs in an ImprerativeExpression, the visibility update of the menu is aborted, see stacktrace below. This results in (popup) menus that show incorrect contents. Exceptions thrown in the evaluation of ImprerativeExpression, should be handled safely in ContributionsAnalyzer. org.eclipse.e4.core.di.InjectionException: org.eclipse.core.runtime.AssertionFailedException: null argument: at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:68) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:318) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:252) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:173) at org.eclipse.e4.ui.internal.workbench.ContributionsAnalyzer.isImperativeExpressionVisible(ContributionsAnalyzer.java:323) at org.eclipse.e4.ui.internal.workbench.ContributionsAnalyzer.isVisible(ContributionsAnalyzer.java:267) at org.eclipse.e4.ui.workbench.renderers.swt.ContributionRecord.computeVisibility(ContributionRecord.java:170) at org.eclipse.e4.ui.workbench.renderers.swt.ContributionRecord.updateVisibility(ContributionRecord.java:101) at org.eclipse.e4.ui.workbench.renderers.swt.MenuManagerRendererFilter.updateElementVisibility(MenuManagerRendererFilter.java:194) at org.eclipse.e4.ui.workbench.renderers.swt.MenuManagerShowProcessor.showMenu(MenuManagerShowProcessor.java:258) at org.eclipse.e4.ui.workbench.renderers.swt.MenuManagerShowProcessor.menuAboutToHide(MenuManagerShowProcessor.java:115) at org.eclipse.jface.internal.MenuManagerEventHelper.showEventPostHelper(MenuManagerEventHelper.java:95) at org.eclipse.jface.action.MenuManager.handleAboutToShow(MenuManager.java:469) at org.eclipse.jface.action.MenuManager.access$1(MenuManager.java:463) at org.eclipse.jface.action.MenuManager$2.menuShown(MenuManager.java:495) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:259) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4175) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1081) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062) at org.eclipse.swt.widgets.Control.WM_INITMENUPOPUP(Control.java:5156) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4788) at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:348) at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1501) at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2138) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4819) at org.eclipse.swt.internal.win32.OS.TrackPopupMenu(Native Method) at org.eclipse.swt.widgets.Menu._setVisible(Menu.java:253) at org.eclipse.swt.widgets.Display.runPopups(Display.java:4029) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3581) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:660) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:559) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:154) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) Caused by: org.eclipse.core.runtime.AssertionFailedException: null argument: at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:88) at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:76) at org.eclipse.core.internal.runtime.AdapterManager.getAdapter(AdapterManager.java:294)
