java.lang.reflect.UndeclaredThrowableException
        at $Proxy6.resultChanged(.java:0)
        at org.openide.util.lookup.SimpleProxyLookup.checkLookup(SimpleProxyLookup.java:89)
        at org.openide.util.lookup.SimpleProxyLookup.access$000(SimpleProxyLookup.java:36)
        at org.openide.util.lookup.SimpleProxyLookup$ProxyResult.checkResult(SimpleProxyLookup.java:161)
        at org.openide.util.lookup.SimpleProxyLookup$ProxyResult.allItems(SimpleProxyLookup.java:241)
        at org.openide.actions.SaveAsAction.resultChanged(SaveAsAction.java:139)
        at org.openide.actions.SaveAsAction.propertyChange(SaveAsAction.java:189)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
        at org.netbeans.core.windows.RegistryImpl.doFirePropertyChange(RegistryImpl.java:292)
        at org.netbeans.core.windows.RegistryImpl.tryFireChanges(RegistryImpl.java:265)
        at org.netbeans.core.windows.RegistryImpl.selectedNodesChanged(RegistryImpl.java:211)
        at org.netbeans.core.windows.RegistryImpl.topComponentActivated(RegistryImpl.java:148)
        at org.netbeans.core.windows.WindowManagerImpl.notifyRegistryTopComponentActivated(WindowManagerImpl.java:968)
        at org.netbeans.core.windows.Central.setActiveMode(Central.java:210)
        at org.netbeans.core.windows.Central.userActivatedMode(Central.java:1738)
        at org.netbeans.core.windows.view.DefaultView.userActivatedModeView(DefaultView.java:596)
        at org.netbeans.core.windows.view.ui.TabbedHandler$ActivationManager.handleActivation(TabbedHandler.java:464)
        at org.netbeans.core.windows.view.ui.TabbedHandler$ActivationManager.eventDispatched(TabbedHandler.java:411)
        at java.awt.Toolkit$SelectiveAWTEventListener.eventDispatched(Toolkit.java:2360)
        at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2252)
        at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2251)
        at java.awt.Toolkit.notifyAWTEventListeners(Toolkit.java:2210)
        at java.awt.Component.dispatchEventImpl(Component.java:4308)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        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:2429)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        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)