java.lang.AssertionError
   at org.netbeans.modules.openide.loaders.AWTTask$Processor.run(AWTTask.java:163)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:226)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:673)
   at java.awt.EventQueue.access$300(EventQueue.java:96)
   at java.awt.EventQueue$2.run(EventQueue.java:634)
   at java.awt.EventQueue$2.run(EventQueue.java:632)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:108)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:643)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)