org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException: Thread-3
   at sun.nio.fs.PollingWatchService$PollingWatchKey.cancel(PollingWatchService.java:306)
   at sun.nio.fs.PollingWatchService$PollingWatchKey.poll(PollingWatchService.java:329)
   at sun.nio.fs.PollingWatchService$PollingWatchKey$1.run(PollingWatchService.java:288)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
   at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
   at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
   at java.lang.Thread.run(Thread.java:745)
Caused: org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException: Pending refresh
Caused: org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException: A deadlock was detected.
We suggest to restart the IDE to recover.
   at sun.nio.fs.PollingWatchService$PollingWatchKey.disable(PollingWatchService.java:297)
   at sun.nio.fs.PollingWatchService.doPrivilegedRegister(PollingWatchService.java:169)
   at sun.nio.fs.PollingWatchService.access$000(PollingWatchService.java:45)
   at sun.nio.fs.PollingWatchService$2.run(PollingWatchService.java:128)
   at sun.nio.fs.PollingWatchService$2.run(PollingWatchService.java:125)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at sun.nio.fs.PollingWatchService.register(PollingWatchService.java:124)
   at sun.nio.fs.UnixPath.register(UnixPath.java:897)
   at sun.nio.fs.AbstractPath.register(AbstractPath.java:104)
   at org.netbeans.modules.masterfs.watcher.nio2.NioNotifier.addWatch(NioNotifier.java:75)
   at org.netbeans.modules.masterfs.watcher.nio2.NioNotifier.addWatch(NioNotifier.java:63)
   at org.netbeans.modules.masterfs.providers.Notifier$1.addWatch(Notifier.java:111)
   at org.netbeans.modules.masterfs.watcher.Watcher$Ext.registerSynchronized(Watcher.java:257)
   at org.netbeans.modules.masterfs.watcher.Watcher$Ext.access$100(Watcher.java:178)
   at org.netbeans.modules.masterfs.watcher.Watcher$Ext$1.run(Watcher.java:239)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.waitNowAndRun(FileChangedManager.java:211)
   at org.netbeans.modules.masterfs.watcher.Watcher$Ext.register(Watcher.java:236)
   at org.netbeans.modules.masterfs.watcher.Watcher.register(Watcher.java:117)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.addFileChangeListener(BaseFileObj.java:554)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectKeeper.listenTo(FileObjectKeeper.java:198)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectKeeper.fileFolderCreatedRecursion(FileObjectKeeper.java:325)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectKeeper.fileFolderCreatedRecursion(FileObjectKeeper.java:333)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectKeeper.fileFolderCreatedRecursion(FileObjectKeeper.java:333)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectKeeper.fileFolderCreated(FileObjectKeeper.java:299)
   at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEventImpl(FCLSupport.java:175)
   at org.openide.filesystems.FCLSupport$DispatchEventWrapperSingle.dispatchAllEventsSync(FCLSupport.java:224)
   at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEvent(FCLSupport.java:137)
   at org.openide.filesystems.FCLSupport.dispatchEvent(FCLSupport.java:105)
   at org.openide.filesystems.FileObject$ED.dispatch(FileObject.java:1398)
   at org.openide.filesystems.FileSystem$EventDispatcher.run(FileSystem.java:795)
   at org.openide.filesystems.EventControl.dispatchEvent(EventControl.java:84)
   at org.openide.filesystems.FileSystem.dispatchEvent(FileSystem.java:554)
   at org.openide.filesystems.FileObject.dispatchEvent(FileObject.java:644)
   at org.openide.filesystems.FileObject.fireFileFolderCreatedEvent(FileObject.java:604)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.fireFileFolderCreatedEvent(BaseFileObj.java:689)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.refreshImpl(FolderObj.java:503)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.refresh(BaseFileObj.java:860)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.refresh(FolderObj.java:562)
   at org.openide.filesystems.FileObject.refresh(FileObject.java:1219)
   at org.netbeans.modules.masterfs.watcher.Watcher$1.run(Watcher.java:435)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)