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java.lang.Object cannot be cast to org.eclipse.e4.core.commands.EHandlerService
java.lang.ClassCastException: java.lang.Object cannot be cast to org.eclipse.e4.core.commands.EHandlerService	at org.eclipse.ui.internal.menus.MenuHelper$1.evaluate(MenuHelper.java:240)	at org.eclipse.e4.ui.internal.workbench.ContributionsAnalyzer.isVisible(ContributionsAnalyzer.java:248)	at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarContributionRecord.computeVisibility(ToolBarContributionRecord.java:114)	at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarContributionRecord.updateVisibility(ToolBarContributionRecord.java:68)	at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer$6.changed(ToolBarManagerRenderer.java:352)	at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:110)	at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:328)	at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:342)	at org.eclipse.e4.core.internal.contexts.EclipseContext.activate(EclipseContext.java:625)	at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener$2.run(ShellActivationListener.java:120)	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)	at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener.activate(ShellActivationListener.java:117)	at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener.handleEvent(ShellActivationListener.java:73)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)	at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1262)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1056)	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.Decorations.WM_ACTIVATE(Decorations.java:1664)	at org.eclipse.swt.widgets.Shell.WM_ACTIVATE(Shell.java:2145)	at org.eclipse.swt.widgets.Control.windowProc(Control.java:4606)	at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:340)	at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1627)	at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2069)	at org.eclipse.swt.widgets.Display.windowProc(Display.java:4977)	at org.eclipse.swt.internal.win32.OS.BringWindowToTop(Native Method)	at org.eclipse.swt.widgets.Decorations.bringToTop(Decorations.java:231)	at org.eclipse.swt.widgets.Shell.open(Shell.java:1217)	at org.eclipse.jface.window.Window.open(Window.java:798)	at org.eclipse.ui.internal.statushandlers.InternalDialog.open(InternalDialog.java:327)	at org.eclipse.ui.internal.statushandlers.WorkbenchStatusDialogManagerImpl.doAddStatusAdapter(WorkbenchStatusDialogManagerImpl.java:270)	at org.eclipse.ui.internal.statushandlers.WorkbenchStatusDialogManagerImpl.addStatusAdapter(WorkbenchStatusDialogManagerImpl.java:197)	at org.eclipse.ui.statushandlers.WorkbenchStatusDialogManager.addStatusAdapter(WorkbenchStatusDialogManager.java:156)	at org.eclipse.ui.statushandlers.WorkbenchErrorHandler.showStatusAdapter(WorkbenchErrorHandler.java:101)	at org.eclipse.ui.statushandlers.WorkbenchErrorHandler.handle(WorkbenchErrorHandler.java:57)	at org.eclipse.ui.internal.ide.IDEWorkbenchErrorHandler.handle(IDEWorkbenchErrorHandler.java:108)	at org.eclipse.ui.internal.WorkbenchErrorHandlerProxy.handle(WorkbenchErrorHandlerProxy.java:36)	at org.eclipse.ui.statushandlers.StatusManager.handle(StatusManager.java:189)	at org.eclipse.ui.internal.progress.ProgressManager$2.done(ProgressManager.java:467)	at org.eclipse.core.internal.jobs.JobListeners$3.notify(JobListeners.java:39)	at org.eclipse.core.internal.jobs.JobListeners.doNotify(JobListeners.java:96)	at org.eclipse.core.internal.jobs.JobListeners.done(JobListeners.java:152)	at org.eclipse.core.internal.jobs.JobManager.endJob(JobManager.java:647)	at org.eclipse.core.internal.jobs.InternalJob.done(InternalJob.java:208)	at org.eclipse.core.runtime.jobs.Job.done(Job.java:226)	at org.eclipse.debug.internal.ui.launchConfigurations.PerspectiveManager$1.run(PerspectiveManager.java:223)	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4145)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3762)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1108)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:992)	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:137)	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:600)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:555)	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:354)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)	at org.eclipse.equinox.launcher.Main.run(Main.java:1450)