java.lang.IllegalStateException: cannot open system clipboard
   at sun.awt.windows.WClipboard.openClipboard(WClipboard.java:0)
   at sun.awt.datatransfer.SunClipboard.getClipboardFormatsOpenClose(SunClipboard.java:315)
   at sun.awt.datatransfer.SunClipboard.isDataFlavorAvailable(SunClipboard.java:175)
   at org.jdesktop.application.TextActions.updateTextActions(TextActions.java:132)
   at org.jdesktop.application.TextActions.access$400(TextActions.java:47)
   at org.jdesktop.application.TextActions$ClipboardListener.flavorsChanged(TextActions.java:108)
   at sun.awt.datatransfer.SunClipboard$1SunFlavorChangeNotifier.run(SunClipboard.java:427)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:641)
   at java.awt.EventQueue.access$000(EventQueue.java:84)
   at java.awt.EventQueue$1.run(EventQueue.java:602)
   at java.awt.EventQueue$1.run(EventQueue.java:600)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:611)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:148)
   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)