java.lang.AssertionError: Should be a folder: /tmp/vcs-1325615175365/vcs-1325615920559@ba6bf7da:4421ae2a
   at org.netbeans.modules.masterfs.watcher.Watcher$Ext.unregister(Watcher.java:253)
   at org.netbeans.modules.masterfs.watcher.Watcher.unregister(Watcher.java:134)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.removeFileChangeListener(BaseFileObj.java:508)
Caused: java.lang.reflect.InvocationTargetException
   at sun.reflect.GeneratedMethodAccessor87.invoke(GeneratedMethodAccessor87.java:0)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.openide.util.WeakListenerImpl$ListenerReference.run(WeakListenerImpl.java:599)
   at org.openide.util.lookup.implspi.ActiveQueue$Impl.run(ActiveQueue.java:109)
   at java.lang.Thread.run(Thread.java:662)