java.lang.IllegalArgumentException: Original Node from map {position=489, iconResource=org/netbeans/modules/kenai/ui/resources/kenai-small.png, name=kenai, original=null, displayName=Kenai Instances, instanceCreate=org.openide.nodes.LazyNode@93adaa[Name=kenai, displayName=Kenai Instances]} is null
   at org.openide.nodes.LazyNode.switchToOriginal(LazyNode.java:82)
   at org.openide.nodes.LazyNode$SwitchChildren.addNotify(LazyNode.java:104)
   at org.openide.nodes.Children.callAddNotify(Children.java:548)
   at org.openide.nodes.EntrySupport$Default.getArray(EntrySupport.java:744)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:166)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:222)
   at org.openide.nodes.EntrySupport$Default.getNodesCount(EntrySupport.java:226)
   at org.openide.nodes.Children.getNodesCount(Children.java:482)
   at org.openide.explorer.view.VisualizerNode.getChildren(VisualizerNode.java:255)
   at org.openide.explorer.view.VisualizerNode.getChildren(VisualizerNode.java:245)
   at org.openide.explorer.view.VisualizerNode.getChildCount(VisualizerNode.java:322)
   at javax.swing.tree.DefaultTreeModel.getChildCount(DefaultTreeModel.java:168)
   at javax.swing.tree.FixedHeightLayoutCache$VisibleFHTreeStateNodeEnumeration.updateNextIndex(FixedHeightLayoutCache.java:1579)
   at javax.swing.tree.FixedHeightLayoutCache$VisibleFHTreeStateNodeEnumeration.updateNextObject(FixedHeightLayoutCache.java:1521)
   at javax.swing.tree.FixedHeightLayoutCache$VisibleFHTreeStateNodeEnumeration.nextElement(FixedHeightLayoutCache.java:1512)
   at javax.swing.tree.FixedHeightLayoutCache$VisibleFHTreeStateNodeEnumeration.nextElement(FixedHeightLayoutCache.java:1461)
   at javax.swing.plaf.synth.SynthTreeUI.paint(SynthTreeUI.java:286)
   at javax.swing.plaf.synth.SynthTreeUI.update(SynthTreeUI.java:226)
   at javax.swing.JComponent.paintComponent(JComponent.java:763)
   at javax.swing.JComponent.paint(JComponent.java:1029)
   at org.openide.explorer.view.TreeView$ExplorerTree.access$1401(TreeView.java:1743)
   at org.openide.explorer.view.TreeView$ExplorerTree.guardedPaint(TreeView.java:1865)
   at org.openide.explorer.view.TreeView$ExplorerTree.access$1800(TreeView.java:1743)
   at org.openide.explorer.view.TreeView$ExplorerTree$GuardedActions.run(TreeView.java:2138)
   at org.openide.util.Mutex.readAccess(Mutex.java:327)
   at org.openide.util.Mutex$1R.run(Mutex.java:1299)
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1812)
   at org.openide.util.Mutex.doWrapperAccess(Mutex.java:1320)
   at org.openide.util.Mutex.readAccess(Mutex.java:275)
   at org.openide.explorer.view.TreeView$ExplorerTree$GuardedActions.<init>(TreeView.java:2131)
   at org.openide.explorer.view.TreeView$ExplorerTree.paint(TreeView.java:1838)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JViewport.paint(JViewport.java:747)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at org.netbeans.swing.tabcontrol.TabbedContainer.paint(TabbedContainer.java:956)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at org.netbeans.core.windows.view.ui.MultiSplitPane.paint(MultiSplitPane.java:325)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JLayeredPane.paint(JLayeredPane.java:567)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JLayeredPane.paint(JLayeredPane.java:567)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintToOffscreen(JComponent.java:5124)
   at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:278)
   at javax.swing.RepaintManager.paint(RepaintManager.java:1220)
   at javax.swing.JComponent._paintImmediately(JComponent.java:5072)
   at javax.swing.JComponent.paintImmediately(JComponent.java:4882)
   at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:803)
   at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:714)
   at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:694)
   at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:128)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:125)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)