java.lang.IllegalStateException: [Winsys] TopComponent org.netbeans.modules.navigator.NavigatorTC throws exception/error from its componentClosed() method.
Please repair it! Probable cause is at org.openide.util.lookup.ProxyLookup$R.lookupChange(ProxyLookup.java:393)
        at org.openide.windows.WindowManager.logThrowable(WindowManager.java:361)
        at org.openide.windows.WindowManager.componentCloseNotify(WindowManager.java:315)
        at org.netbeans.core.windows.WindowManagerImpl.notifyTopComponentClosed(WindowManagerImpl.java:974)
        at org.netbeans.core.windows.Central.closeGroup(Central.java:1230)
        at org.netbeans.core.windows.TopComponentGroupImpl.close(TopComponentGroupImpl.java:81)
        at org.netbeans.modules.visualweb.designer.jsf.ui.JsfMultiViewElement.closeJsfTopComponentGroupIfNeeded(JsfMultiViewElement.java:270)
        at org.netbeans.modules.visualweb.designer.jsf.ui.JsfMultiViewElement.componentHidden(JsfMultiViewElement.java:138)
        at org.netbeans.modules.visualweb.project.jsfloader.OpenEditOverride$MultiViewDelegate.componentHidden(OpenEditOverride.java:207)
        at org.netbeans.core.multiview.MultiViewPeer.hideElement(MultiViewPeer.java:251)
        at org.netbeans.core.multiview.MultiViewPeer$SelectionListener.selectionChanged(MultiViewPeer.java:658)
        at org.netbeans.core.multiview.MultiViewModel.fireSelectionChanged(MultiViewModel.java:243)
        at org.netbeans.core.multiview.MultiViewModel.setActiveDescription(MultiViewModel.java:115)
        at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:293)
        at javax.swing.JToggleButton$ToggleButtonModel.setSelected(JToggleButton.java:237)
        at javax.swing.ButtonGroup.setSelected(ButtonGroup.java:147)
        at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:289)
        at org.netbeans.core.multiview.TabsComponent$ButtonMouseListener.mousePressed(TabsComponent.java:447)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:263)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
        at java.awt.Component.processMouseEvent(Component.java:6038)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
        at java.awt.Component.processEvent(Component.java:5806)
        at java.awt.Container.processEvent(Container.java:2058)
        at java.awt.Component.dispatchEventImpl(Component.java:4413)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4243)
        at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4322)
        at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:3983)
        at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:3916)
        at java.awt.Container.dispatchEventImpl(Container.java:2102)
        at java.awt.Window.dispatchEventImpl(Window.java:2440)
        at java.awt.Component.dispatchEvent(Component.java:4243)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
java.lang.ArrayIndexOutOfBoundsException: 1
        at org.openide.util.lookup.ProxyLookup$R.lookupChange(ProxyLookup.java:393)
        at org.openide.util.lookup.ProxyLookup.setLookups(ProxyLookup.java:187)
        at org.netbeans.modules.navigator.NavigatorController$ClientsLookup.beforeLookup(NavigatorController.java:655)
        at org.openide.util.lookup.ProxyLookup.lookup(ProxyLookup.java:232)
        at org.netbeans.modules.navigator.NavigatorController.navigatorTCClosed(NavigatorController.java:183)
        at org.netbeans.modules.navigator.NavigatorTC.componentClosed(NavigatorTC.java:261)
        at org.openide.windows.WindowManager.componentCloseNotify(WindowManager.java:313)
        at org.netbeans.core.windows.WindowManagerImpl.notifyTopComponentClosed(WindowManagerImpl.java:974)
        at org.netbeans.core.windows.Central.closeGroup(Central.java:1230)
        at org.netbeans.core.windows.TopComponentGroupImpl.close(TopComponentGroupImpl.java:81)
        at org.netbeans.modules.visualweb.designer.jsf.ui.JsfMultiViewElement.closeJsfTopComponentGroupIfNeeded(JsfMultiViewElement.java:270)
        at org.netbeans.modules.visualweb.designer.jsf.ui.JsfMultiViewElement.componentHidden(JsfMultiViewElement.java:138)
        at org.netbeans.modules.visualweb.project.jsfloader.OpenEditOverride$MultiViewDelegate.componentHidden(OpenEditOverride.java:207)
        at org.netbeans.core.multiview.MultiViewPeer.hideElement(MultiViewPeer.java:251)
        at org.netbeans.core.multiview.MultiViewPeer$SelectionListener.selectionChanged(MultiViewPeer.java:658)
        at org.netbeans.core.multiview.MultiViewModel.fireSelectionChanged(MultiViewModel.java:243)
        at org.netbeans.core.multiview.MultiViewModel.setActiveDescription(MultiViewModel.java:115)
        at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:293)
        at javax.swing.JToggleButton$ToggleButtonModel.setSelected(JToggleButton.java:237)
        at javax.swing.ButtonGroup.setSelected(ButtonGroup.java:147)
        at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:289)
        at org.netbeans.core.multiview.TabsComponent$ButtonMouseListener.mousePressed(TabsComponent.java:447)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:263)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
        at java.awt.Component.processMouseEvent(Component.java:6038)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
        at java.awt.Component.processEvent(Component.java:5806)
        at java.awt.Container.processEvent(Container.java:2058)
        at java.awt.Component.dispatchEventImpl(Component.java:4413)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4243)
        at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4322)
        at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:3983)
        at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:3916)
        at java.awt.Container.dispatchEventImpl(Container.java:2102)
        at java.awt.Window.dispatchEventImpl(Window.java:2440)
        at java.awt.Component.dispatchEvent(Component.java:4243)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        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)