java.lang.NullPointerException
	at org.netbeans.modules.form.menu.MenuEditLayer.unconfigureFormListeners(MenuEditLayer.java:349)
	at org.netbeans.modules.form.menu.MenuEditLayer.hideMenuLayer(MenuEditLayer.java:268)
	at org.netbeans.modules.form.menu.MenuEditLayer$3.formChanged(MenuEditLayer.java:331)
	at org.netbeans.modules.form.FormModel.fireEvents(FormModel.java:988)
	at org.netbeans.modules.form.FormModel$EventBroker.run(FormModel.java:1097)
	at org.netbeans.modules.form.FormModel$EventBroker.sendEventImmediately(FormModel.java:1055)
	at org.netbeans.modules.form.FormModel.sendEventImmediately(FormModel.java:1018)
	at org.netbeans.modules.form.FormModel.fireFormToBeClosed(FormModel.java:698)
	at org.netbeans.modules.form.FormEditor.closeForm(FormEditor.java:602)
	at org.netbeans.modules.form.FormEditorSupport.notifyClosed(FormEditorSupport.java:485)
	at org.netbeans.modules.form.FormEditorSupport.multiViewClosed(FormEditorSupport.java:517)
	at org.netbeans.modules.form.FormEditorSupport.access$400(FormEditorSupport.java:103)
	at org.netbeans.modules.form.FormEditorSupport$6.propertyChange(FormEditorSupport.java:614)
	at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
	at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
	at org.netbeans.core.windows.RegistryImpl.doFirePropertyChange(RegistryImpl.java:292)
	at org.netbeans.core.windows.RegistryImpl.topComponentClosed(RegistryImpl.java:174)
	at org.netbeans.core.windows.WindowManagerImpl.notifyRegistryTopComponentClosed(WindowManagerImpl.java:988)
	at org.netbeans.core.windows.WindowManagerImpl.notifyTopComponentClosed(WindowManagerImpl.java:960)
	at org.netbeans.core.windows.Central.removeModeTopComponent(Central.java:925)
	at org.netbeans.core.windows.ModeImpl.removeTopComponent(ModeImpl.java:385)
	at org.netbeans.core.windows.ModeImpl.close(ModeImpl.java:219)
	at org.netbeans.core.windows.WindowManagerImpl.topComponentClose(WindowManagerImpl.java:1100)
	at org.openide.windows.TopComponent.close(TopComponent.java:419)
	at org.openide.windows.TopComponent.close(TopComponent.java:405)
	at org.openide.windows.CloneableOpenSupport$2.run(CloneableOpenSupport.java:133)
	at org.openide.windows.CloneableOpenSupport$2.run(CloneableOpenSupport.java:120)
	at org.openide.util.Mutex.doEventAccess(Mutex.java:1201)
	at org.openide.util.Mutex.writeAccess(Mutex.java:311)
	at org.openide.windows.CloneableOpenSupport.close(CloneableOpenSupport.java:118)
	at org.openide.text.CloneableEditorSupport.close(CloneableEditorSupport.java:1848)
	at org.openide.windows.CloneableOpenSupport$Listener.run(CloneableOpenSupport.java:323)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:177)
	at java.awt.Dialog$1.run(Dialog.java:1039)
	at java.awt.Dialog$3.run(Dialog.java:1091)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.awt.Dialog.show(Dialog.java:1089)
	at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:812)
	at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:846)
	at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:834)
	at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:82)
	at org.openide.util.Mutex.doEventAccess(Mutex.java:1201)
	at org.openide.util.Mutex.readAccess(Mutex.java:220)
	at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:819)
	at java.awt.Component.show(Component.java:1419)
	at java.awt.Component.setVisible(Component.java:1372)
	at java.awt.Window.setVisible(Window.java:801)
	at java.awt.Dialog.setVisible(Dialog.java:979)
	at org.netbeans.modules.refactoring.spi.impl.ParametersPanel.showDialog(ParametersPanel.java:479)
	at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.refresh(RefactoringPanel.java:581)
	at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.<init>(RefactoringPanel.java:115)
	at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.<init>(RefactoringPanel.java:107)
	at org.netbeans.modules.refactoring.spi.ui.UI.openRefactoringUI(UI.java:50)
	at org.netbeans.modules.refactoring.java.ui.RefactoringActionsProvider$NodeToFileObjectTask.run(RefactoringActionsProvider.java:651)
	at org.netbeans.modules.refactoring.java.RetoucheUtils.invokeAfterScanFinished(RetoucheUtils.java:802)
	at org.netbeans.modules.refactoring.java.ui.RefactoringActionsProvider.doDelete(RefactoringActionsProvider.java:323)
	at org.netbeans.modules.refactoring.api.impl.ActionsImplementationFactory.doDelete(ActionsImplementationFactory.java:82)
	at org.netbeans.modules.refactoring.spi.impl.SafeDeleteAction.performAction(SafeDeleteAction.java:44)
	at org.netbeans.modules.refactoring.spi.impl.RefactoringGlobalAction.performAction(RefactoringGlobalAction.java:111)
[catch] at org.netbeans.modules.refactoring.spi.impl.SafeDeleteAction$1.run(SafeDeleteAction.java:77)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)