java.util.ConcurrentModificationException
   at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:393)
   at java.util.LinkedHashMap$KeyIterator.next(LinkedHashMap.java:404)
   at org.netbeans.modules.options.TabbedController.initTabbedPane(TabbedController.java:182)
   at org.netbeans.modules.options.TabbedController.access$100(TabbedController.java:79)
   at org.netbeans.modules.options.TabbedController$1$1.run(TabbedController.java:94)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:726)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:687)
   at java.awt.EventQueue$3.run(EventQueue.java:685)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:696)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:220)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:135)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:123)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:119)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:111)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)