java.util.ConcurrentModificationException
   at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:394)
   at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:413)
   at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:412)
   at java.util.HashMap.putAllForCreate(HashMap.java:558)
   at java.util.HashMap.<init>(HashMap.java:298)
   at java.util.LinkedHashMap.<init>(LinkedHashMap.java:212)
   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:733)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:694)
   at java.awt.EventQueue$3.run(EventQueue.java:692)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)