java.lang.NullPointerException
   at javax.swing.JList$AccessibleJList$AccessibleJListChild.getAccessibleValue(JList.java:3398)
   at org.GNOME.Accessibility.AtkWrapper.emitSignal(AtkWrapper.java:0)
   at org.GNOME.Accessibility.AtkWrapper$4.propertyChange(AtkWrapper.java:507)
   at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263)
   at javax.accessibility.AccessibleContext.firePropertyChange(AccessibleContext.java:768)
   at javax.swing.JList$AccessibleJList.valueChanged(JList.java:2955)
   at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:184)
   at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:164)
   at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:211)
   at javax.swing.DefaultListSelectionModel.changeSelection(DefaultListSelectionModel.java:405)
   at javax.swing.DefaultListSelectionModel.changeSelection(DefaultListSelectionModel.java:415)
   at javax.swing.DefaultListSelectionModel.setSelectionInterval(DefaultListSelectionModel.java:459)
   at javax.swing.JList.setSelectedIndex(JList.java:2210)
   at org.netbeans.modules.editor.completion.CompletionJList.setSelectedIndex(CompletionJList.java:218)
   at org.netbeans.modules.editor.completion.CompletionJList.setData(CompletionJList.java:188)
   at org.netbeans.modules.editor.completion.CompletionScrollPane.setData(CompletionScrollPane.java:130)
   at org.netbeans.modules.editor.completion.CompletionLayout$CompletionPopup.show(CompletionLayout.java:456)
   at org.netbeans.modules.editor.completion.CompletionLayout$CompletionPopup.show(CompletionLayout.java:368)
   at org.netbeans.modules.editor.completion.CompletionLayout.showCompletion(CompletionLayout.java:146)
   at org.netbeans.modules.editor.completion.CompletionImpl$8.run(CompletionImpl.java:1063)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:709)
   at java.awt.EventQueue$3.run(EventQueue.java:703)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)