java.util.NoSuchElementException
        at java.util.AbstractList$Itr.next(AbstractList.java:427)
        at org.openide.explorer.view.VisualizerChildren.added(VisualizerChildren.java:178)
        at org.openide.explorer.view.VisualizerEvent$Added.run(VisualizerEvent.java:100)
        at org.openide.util.Mutex.readAccess(Mutex.java:362)
        at org.openide.explorer.view.VisualizerNode$QP.run(VisualizerNode.java:670)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        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)