java.io.IOException: system clipboard data unavailable
   at sun.awt.windows.WClipboard.getClipboardData(WClipboard.java:0)
   at sun.awt.datatransfer.ClipboardTransferable.fetchOneFlavor(ClipboardTransferable.java:118)
   at sun.awt.datatransfer.ClipboardTransferable.<init>(ClipboardTransferable.java:97)
   at sun.awt.datatransfer.SunClipboard.getContents(SunClipboard.java:147)
   at org.netbeans.NbClipboard$GetContents.run(NbClipboard.java:432)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042)
Caused: java.util.concurrent.ExecutionException: java.io.IOException: system clipboard data unavailable
   at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252)
   at java.util.concurrent.FutureTask.get(FutureTask.java:111)
   at javax.swing.SwingWorker.get(SwingWorker.java:602)
Caused: java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.io.IOException: system clipboard data unavailable
   at b2s.clipboard.history.ClipboardContentGrabber.grab(ClipboardContentGrabber.java:27)
   at b2s.clipboard.history.ClipboardHistoryInstaller.addClipboardContentsToHistory(ClipboardHistoryInstaller.java:52)
   at b2s.clipboard.history.ClipboardHistoryInstaller.clipboardChanged(ClipboardHistoryInstaller.java:48)
   at org.openide.util.datatransfer.ExClipboard.fireClipboardChange(ExClipboard.java:97)
   at org.netbeans.NbClipboard.fireChange(NbClipboard.java:343)
   at org.netbeans.NbClipboard.flavorsChanged(NbClipboard.java:335)
   at sun.awt.datatransfer.SunClipboard$1SunFlavorChangeNotifier.run(SunClipboard.java:448)
   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)