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:651)
        at org.openide.util.lookup.ProxyLookup.lookup(ProxyLookup.java:232)
        at org.netbeans.modules.navigator.NavigatorController.updateContext(NavigatorController.java:354)
        at org.netbeans.modules.navigator.NavigatorController.updateContext(NavigatorController.java:256)
        at org.netbeans.modules.navigator.NavigatorController.access$700(NavigatorController.java:98)
        at org.netbeans.modules.navigator.NavigatorController$ActNodeSetter.run(NavigatorController.java:613)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)