java.lang.NullPointerException
   at clojure.lang.Reflector.invokeNoArgInstanceMember(Reflector.java:263)
   at org.enclojure.ide.nb.editor.completion.symbol_caching$get_nav_data_for__478.invoke(symbol_caching.java:607)
   at org.enclojure.ide.nb.editor.data_object_listener$update_nav_data__3937.invoke(data_object_listener.java:43)
   at org.enclojure.ide.nb.editor.data_object_listener$eval__3962$fn__3965.invoke(data_object_listener.java:59)
   at clojure.lang.MultiFn.invoke(MultiFn.java:161)
   at org.enclojure.ide.nb.editor.data_object_listener$get_property_listener__3970$fn__3972.invoke(data_object_listener.java:65)
   at org.enclojure.ide.nb.editor.data_object_listener.proxy$java.lang.Object$PropertyChangeListener$1884b5b0.propertyChange(Object.java:0)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
   at org.openide.loaders.DataObject.firePropertyChange(DataObject.java:920)
   at org.openide.loaders.MultiDataObject.fireCookieChange(MultiDataObject.java:849)
   at org.openide.loaders.MultiDataObject$ChangeAndBefore.stateChanged(MultiDataObject.java:1265)
   at org.openide.util.ChangeSupport.fireChange(ChangeSupport.java:130)
   at org.openide.util.ChangeSupport.fireChange(ChangeSupport.java:116)
   at org.openide.nodes.CookieSet.fireChangeEvent(CookieSet.java:299)
   at org.openide.nodes.CookieSetLkp.replaceInstances(CookieSetLkp.java:129)
   at org.openide.nodes.CookieSet.assign(CookieSet.java:502)
   at org.openide.loaders.MimeFactory.findDataObject(MimeFactory.java:123)
   at org.openide.loaders.DataObjectPool.handleFindDataObject(DataObjectPool.java:178)
   at org.openide.loaders.DataLoaderPool.findDataObject(DataLoaderPool.java:533)
   at org.openide.loaders.DataLoaderPool.findDataObject(DataLoaderPool.java:489)
   at org.openide.loaders.DataObject.find(DataObject.java:506)
   at org.openide.loaders.FolderChildren.createNodes(FolderChildren.java:199)
   at org.openide.loaders.FolderChildren.createNodes(FolderChildren.java:66)
   at org.openide.nodes.Children$Keys$KE.nodes(Children.java:1611)
   at org.openide.nodes.EntrySupport$Lazy$EntryInfo.getNode(EntrySupport.java:1563)
   at org.openide.nodes.EntrySupport$Lazy$EntryInfo.getNode(EntrySupport.java:1529)
   at org.openide.nodes.EntrySupport$Lazy$LazySnapshot.get(EntrySupport.java:1791)
   at org.openide.nodes.FilterNode$Children$LazySupport$FilterNodeEntry.nodes(FilterNode.java:1860)
   at org.openide.nodes.EntrySupport$Lazy$EntryInfo.getNode(EntrySupport.java:1563)
   at org.openide.nodes.FilterNode$Children$LazySupport$FilterLazySnapshot.get(FilterNode.java:1728)
   at org.openide.nodes.FilterNode$Children$LazySupport$FilterNodeEntry.nodes(FilterNode.java:1860)
   at org.openide.nodes.EntrySupport$Lazy$EntryInfo.getNode(EntrySupport.java:1563)
   at org.openide.nodes.FilterNode$Children$LazySupport$FilterLazySnapshot.get(FilterNode.java:1728)
   at org.openide.nodes.FilterNode$Children$LazySupport$FilterNodeEntry.nodes(FilterNode.java:1860)
   at org.openide.nodes.EntrySupport$Lazy$EntryInfo.getNode(EntrySupport.java:1563)
   at org.openide.nodes.FilterNode$Children$LazySupport$FilterLazySnapshot.get(FilterNode.java:1728)
   at org.openide.nodes.EntrySupport$Lazy$LazySnapshot.get(EntrySupport.java:1786)
   at org.openide.nodes.EntrySupport$Lazy$LazySnapshot.get(EntrySupport.java:1774)
   at org.openide.explorer.view.VisualizerChildren.getChildAt(VisualizerChildren.java:116)
   at org.openide.explorer.view.VisualizerNode.getChildAt(VisualizerNode.java:318)
   at javax.swing.tree.DefaultTreeModel.getChild(DefaultTreeModel.java:156)
   at javax.swing.tree.FixedHeightLayoutCache$VisibleFHTreeStateNodeEnumeration.nextElement(FixedHeightLayoutCache.java:1506)
   at javax.swing.tree.FixedHeightLayoutCache$VisibleFHTreeStateNodeEnumeration.nextElement(FixedHeightLayoutCache.java:1461)
   at javax.swing.plaf.basic.BasicTreeUI.paint(BasicTreeUI.java:1164)
   at javax.swing.plaf.ComponentUI.update(ComponentUI.java:143)
   at javax.swing.JComponent.paintComponent(JComponent.java:752)
   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:2135)
   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:2128)
   at org.openide.explorer.view.TreeView$ExplorerTree.paint(TreeView.java:1838)
   at javax.swing.JComponent.paintToOffscreen(JComponent.java:5124)
   at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1479)
   at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1410)
   at javax.swing.RepaintManager.paint(RepaintManager.java:1224)
   at javax.swing.JComponent.paintForceDoubleBuffered(JComponent.java:1065)
   at javax.swing.JViewport.blitDoubleBuffered(JViewport.java:1612)
   at javax.swing.JViewport.windowBlitPaint(JViewport.java:1573)
   at javax.swing.JViewport.setViewPosition(JViewport.java:1118)
   at javax.swing.plaf.basic.BasicScrollPaneUI$Handler.vsbStateChanged(BasicScrollPaneUI.java:1027)
   at javax.swing.plaf.basic.BasicScrollPaneUI$Handler.stateChanged(BasicScrollPaneUI.java:1016)
   at javax.swing.DefaultBoundedRangeModel.fireStateChanged(DefaultBoundedRangeModel.java:348)
   at javax.swing.DefaultBoundedRangeModel.setRangeProperties(DefaultBoundedRangeModel.java:285)
   at javax.swing.DefaultBoundedRangeModel.setValue(DefaultBoundedRangeModel.java:151)
   at javax.swing.JScrollBar.setValue(JScrollBar.java:446)
   at javax.swing.plaf.basic.BasicScrollBarUI$TrackListener.setValueFrom(BasicScrollBarUI.java:1220)
   at javax.swing.plaf.basic.BasicScrollBarUI$TrackListener.mouseDragged(BasicScrollBarUI.java:1162)
   at java.awt.Component.processMouseMotionEvent(Component.java:6311)
   at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3285)
   at java.awt.Component.processEvent(Component.java:6032)
   at java.awt.Container.processEvent(Container.java:2041)
   at java.awt.Component.dispatchEventImpl(Component.java:4630)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4574)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4255)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4168)
   at java.awt.Container.dispatchEventImpl(Container.java:2085)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   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)