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org.eclipse.swt.SWTException: Widget is disposed at org.eclipse.swt.SWT.error(SWT.java:4361) at org.eclipse.swt.SWT.error(SWT.java:4276) at org.eclipse.swt.SWT.error(SWT.java:4247) at org.eclipse.swt.widgets.Widget.error(Widget.java:479) at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:416) at org.eclipse.swt.widgets.Control.getParent(Control.java:2664) at org.eclipse.e4.ui.workbench.addons.cleanupaddon.CleanupAddon$2.handleEvent(CleanupAddon.java:205) at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180) at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150) at org.eclipse.swt.widgets.Display.syncExec(Display.java:4290) at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:184) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38) at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148) at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135) at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78) at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39) at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:81) at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:57) at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:380) at org.eclipse.e4.ui.model.application.ui.impl.UIElementImpl.setVisible(UIElementImpl.java:332) at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarContributionRecord.updateVisibility(ToolBarContributionRecord.java:71) at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer$6.changed(ToolBarManagerRenderer.java:382) at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:109) at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:298) at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:312) at org.eclipse.e4.core.internal.contexts.EclipseContext.activate(EclipseContext.java:598) at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener$3.run(ShellActivationListener.java:153) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener.deactivate(ShellActivationListener.java:145) at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener.access$0(ShellActivationListener.java:131) at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener$4.widgetDisposed(ShellActivationListener.java:197) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:123) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1271) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1295) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1276) at org.eclipse.swt.widgets.Widget.release(Widget.java:1093) at org.eclipse.swt.widgets.Control.release(Control.java:3529) at org.eclipse.swt.widgets.Widget.dispose(Widget.java:475) at org.eclipse.swt.widgets.Shell.dispose(Shell.java:2307) at org.eclipse.jface.window.Window.close(Window.java:335) at org.eclipse.jface.dialogs.Dialog.close(Dialog.java:979) at org.eclipse.jface.preference.PreferenceDialog.close(PreferenceDialog.java:318) at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.close(FilteredPreferenceDialog.java:698) at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.close(WorkbenchPreferenceDialog.java:147) at org.eclipse.jface.preference.PreferenceDialog$13.run(PreferenceDialog.java:987) 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.preference.PreferenceDialog.okPressed(PreferenceDialog.java:945) at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.okPressed(FilteredPreferenceDialog.java:448) at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.okPressed(WorkbenchPreferenceDialog.java:171) at org.eclipse.jface.preference.PreferenceDialog.buttonPressed(PreferenceDialog.java:233) at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:624) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1271) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3553) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3178) at org.eclipse.jface.window.Window.runEventLoop(Window.java:825) at org.eclipse.jface.window.Window.open(Window.java:801) at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.open(WorkbenchPreferenceDialog.java:215) at org.eclipse.ui.internal.handlers.ShowPreferencePageHandler.execute(ShowPreferencePageHandler.java:58) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293) at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:72) 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.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:229) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:210) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:131) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:161) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:793) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.handleWidgetSelection(HandledContributionItem.java:686) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.access$6(HandledContributionItem.java:670) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem$4.handleEvent(HandledContributionItem.java:616) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1271) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3553) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3178) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1015) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:909) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:85) at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:580) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:535) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124) 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:353) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180) 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:629) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584) at org.eclipse.equinox.launcher.Main.run(Main.java:1438) at org.eclipse.equinox.launcher.Main.main(Main.java:1414)