java.lang.NullPointerException
   at org.netbeans.modules.java.editor.fold.ParsingFoldSupport$FM.invalidate(ParsingFoldSupport.java:489)
   at org.netbeans.modules.java.editor.fold.ParsingFoldSupport$FM.removeUpdate(ParsingFoldSupport.java:503)
   at org.netbeans.modules.editor.fold.FoldOperationImpl.removeUpdate(FoldOperationImpl.java:249)
   at org.netbeans.modules.editor.fold.FoldHierarchyExecution.removeUpdate(FoldHierarchyExecution.java:1002)
   at org.netbeans.lib.editor.util.swing.PriorityDocumentListenerList.removeUpdate(PriorityDocumentListenerList.java:116)
   at javax.swing.text.AbstractDocument.fireRemoveUpdate(AbstractDocument.java:259)
   at org.netbeans.editor.BaseDocument.fireRemoveUpdate(BaseDocument.java:1627)
   at org.netbeans.editor.BaseDocument.handleRemove(BaseDocument.java:1021)
   at org.netbeans.editor.BaseDocument.remove(BaseDocument.java:939)
   at javax.swing.JEditorPane.setText(JEditorPane.java:1409)
   at org.netbeans.modules.debugger.jpda.ui.WatchPanel$5.actionPerformed(WatchPanel.java:487)
   at org.netbeans.modules.debugger.jpda.ui.WatchPanel$1$1.run(WatchPanel.java:156)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:744)
   at java.awt.EventQueue.access$400(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:697)
   at java.awt.EventQueue$3.run(EventQueue.java:691)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:714)
   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)