java.lang.IllegalArgumentException: affectedStartOffset=-536805020 < 0
   at org.netbeans.modules.editor.fold.FoldHierarchyExecution.createAndFireFoldHierarchyEvent(FoldHierarchyExecution.java:550)
   at org.netbeans.modules.editor.fold.FoldHierarchyTransactionImpl.commit(FoldHierarchyTransactionImpl.java:259)
   at org.netbeans.spi.editor.fold.FoldHierarchyTransaction.commit(FoldHierarchyTransaction.java:91)
   at org.netbeans.modules.csl.editor.fold.GsfFoldManager$CommitFolds.run(GsfFoldManager.java:682)
   at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1353)
   at org.netbeans.modules.csl.editor.fold.GsfFoldManager$CommitFolds.run(GsfFoldManager.java:610)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:666)
   at java.awt.EventQueue.access$400(EventQueue.java:81)
   at java.awt.EventQueue$2.run(EventQueue.java:627)
   at java.awt.EventQueue$2.run(EventQueue.java:625)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:636)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   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)