java.lang.AssertionError
   at org.openide.text.CloneableEditor$DoInitialize.initNonVisual(CloneableEditor.java:584)
   at org.openide.text.CloneableEditor$DoInitialize.run(CloneableEditor.java:330)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1960)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.AssertionError
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1459)
   at org.openide.text.CloneableEditor$DoInitialize.<init>(CloneableEditor.java:297)
   at org.openide.text.CloneableEditor.initialize(CloneableEditor.java:232)
   at org.openide.text.CloneableEditor.componentShowing(CloneableEditor.java:208)
   at org.openide.windows.WindowManager.componentShowing(WindowManager.java:335)
   at org.netbeans.core.windows.WindowManagerImpl.componentShowing(WindowManagerImpl.java:1025)
   at org.netbeans.core.windows.view.DefaultView.changeGUI(DefaultView.java:164)
   at org.netbeans.core.windows.ViewRequestor.dispatchRequest(ViewRequestor.java:272)
   at org.netbeans.core.windows.ViewRequestor.processRequest(ViewRequestor.java:248)
   at org.netbeans.core.windows.ViewRequestor.postRequest(ViewRequestor.java:186)
   at org.netbeans.core.windows.ViewRequestor.scheduleRequest(ViewRequestor.java:126)
   at org.netbeans.core.windows.Central.removeModeTopComponent(Central.java:993)
   at org.netbeans.core.windows.ModeImpl.removeTopComponent(ModeImpl.java:417)
   at org.netbeans.core.windows.ModeImpl.close(ModeImpl.java:246)
   at org.netbeans.core.windows.WindowManagerImpl.topComponentClose(WindowManagerImpl.java:1136)
   at org.openide.windows.TopComponent.close(TopComponent.java:555)
   at org.openide.windows.TopComponent.close(TopComponent.java:542)
   at org.netbeans.modules.project.ui.ProjectUtilities$1.doClose(ProjectUtilities.java:207)
   at org.netbeans.modules.project.ui.ProjectUtilities$1.access$200(ProjectUtilities.java:102)
   at org.netbeans.modules.project.ui.ProjectUtilities$1$1.run(ProjectUtilities.java:138)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:138)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178)
   at java.awt.Dialog$1.run(Dialog.java:1046)
   at java.awt.Dialog$3.run(Dialog.java:1098)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.awt.Dialog.show(Dialog.java:1096)
   at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1006)
   at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1040)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1028)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:121)
   at org.openide.util.Mutex.doEventAccess(Mutex.java:1361)
   at org.openide.util.Mutex.readAccess(Mutex.java:271)
   at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:1013)
   at java.awt.Component.show(Component.java:1563)
   at java.awt.Component.setVisible(Component.java:1515)
   at java.awt.Window.setVisible(Window.java:842)
   at java.awt.Dialog.setVisible(Dialog.java:986)
   at org.netbeans.modules.project.uiapi.DefaultProjectOperationsImplementation.showConfirmationDialog(DefaultProjectOperationsImplementation.java:673)
   at org.netbeans.modules.project.uiapi.DefaultProjectOperationsImplementation.moveProject(DefaultProjectOperationsImplementation.java:330)
   at org.netbeans.spi.project.ui.support.DefaultProjectOperations.performDefaultMoveOperation(DefaultProjectOperations.java:134)
   at org.netbeans.modules.maven.ActionProviderImpl.invokeAction(ActionProviderImpl.java:184)
   at org.netbeans.modules.project.ui.actions.ProjectAction.actionPerformed(ProjectAction.java:134)
   at org.netbeans.modules.project.ui.actions.LookupSensitiveAction.actionPerformed(LookupSensitiveAction.java:170)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
   at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223)
   at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264)
   at java.awt.Component.processMouseEvent(Component.java:6263)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
   at java.awt.Component.processEvent(Component.java:6028)
   at java.awt.Container.processEvent(Container.java:2041)
   at java.awt.Component.dispatchEventImpl(Component.java:4630)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4574)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4238)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4168)
   at java.awt.Container.dispatchEventImpl(Container.java:2085)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:138)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)