Error while informing user about event loop exception: org.eclipse.swt.SWTError: XPCOM error -2147467262 at org.eclipse.swt.browser.Mozilla.error(Mozilla.java:2089) at org.eclipse.swt.browser.Mozilla.unhookDOMListeners(Mozilla.java:2453) at org.eclipse.swt.browser.Mozilla.onDispose(Mozilla.java:2102) at org.eclipse.swt.browser.Mozilla$5.handleEvent(Mozilla.java:1480) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1176) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1200) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1181) at org.eclipse.swt.widgets.Widget.release(Widget.java:1044) at org.eclipse.swt.widgets.Control.release(Control.java:3293) at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:1185) at org.eclipse.swt.widgets.Widget.release(Widget.java:1047) at org.eclipse.swt.widgets.Control.release(Control.java:3293) at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:1185) at org.eclipse.swt.widgets.Widget.release(Widget.java:1047) at org.eclipse.swt.widgets.Control.release(Control.java:3293) at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:1185) at org.eclipse.swt.widgets.Widget.release(Widget.java:1047) at org.eclipse.swt.widgets.Control.release(Control.java:3293) at org.eclipse.swt.widgets.Widget.dispose(Widget.java:446) at org.eclipse.ui.internal.PartPane.dispose(PartPane.java:180) at org.eclipse.ui.internal.WorkbenchPartReference.dispose(WorkbenchPartReference.java:681) at org.eclipse.ui.internal.WorkbenchPage.disposePart(WorkbenchPage.java:1715) at org.eclipse.ui.internal.WorkbenchPage.handleDeferredEvents(WorkbenchPage.java:1422) at org.eclipse.ui.internal.WorkbenchPage.deferUpdates(WorkbenchPage.java:1406) at org.eclipse.ui.internal.WorkbenchPage.closeEditors(WorkbenchPage.java:1380) at org.eclipse.ui.internal.WorkbenchPage.closeAllEditors(WorkbenchPage.java:1184) at org.eclipse.ui.internal.WorkbenchPage.dispose(WorkbenchPage.java:1764) at org.eclipse.ui.internal.WorkbenchWindow.closeAllPages(WorkbenchWindow.java:851) at org.eclipse.ui.internal.WorkbenchWindow.hardClose(WorkbenchWindow.java:1675) at org.eclipse.ui.internal.WorkbenchWindow.busyClose(WorkbenchWindow.java:724) at org.eclipse.ui.internal.WorkbenchWindow.access$0(WorkbenchWindow.java:700) at org.eclipse.ui.internal.WorkbenchWindow$5.run(WorkbenchWindow.java:816) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchWindow.close(WorkbenchWindow.java:814) at org.eclipse.jface.window.WindowManager.close(WindowManager.java:109) at org.eclipse.ui.internal.Workbench$16.run(Workbench.java:930) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.Workbench.busyClose(Workbench.java:927) at org.eclipse.ui.internal.Workbench.access$15(Workbench.java:856) at org.eclipse.ui.internal.Workbench$23.run(Workbench.java:1100) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.Workbench.close(Workbench.java:1098) at org.eclipse.ui.internal.Workbench.close(Workbench.java:1070) at org.eclipse.ui.internal.handlers.QuitHandler.execute(QuitHandler.java:41) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:294) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508) at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169) at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241) at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:157) 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:1176) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3493) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3112) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194) 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:368) 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:559) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514) at org.eclipse.equinox.launcher.Main.run(Main.java:1311) at org.eclipse.equinox.launcher.Main.main(Main.java:1287) Dialog open exception: java.lang.NullPointerException at org.eclipse.ui.internal.ide.IDEWorkbenchErrorHandler.openQuestionDialog(IDEWorkbenchErrorHandler.java:195) at org.eclipse.ui.internal.ide.IDEWorkbenchErrorHandler.handleException(IDEWorkbenchErrorHandler.java:154) at org.eclipse.ui.internal.ide.IDEWorkbenchErrorHandler.access$0(IDEWorkbenchErrorHandler.java:146) at org.eclipse.ui.internal.ide.IDEWorkbenchErrorHandler$1.runInUIThread(IDEWorkbenchErrorHandler.java:121) at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:95) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3468) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3115) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194) 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:368) 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:559) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514) at org.eclipse.equinox.launcher.Main.run(Main.java:1311) at org.eclipse.equinox.launcher.Main.main(Main.java:1287)