java.lang.IllegalArgumentException: org.openide.filesystems.DeepListener@1a9f01a was not listening to /usr/jdk/instances/jdk1.6.0_14/jre/classes; only to []
   at org.openide.filesystems.FileUtil.removeFileChangeListenerImpl(FileUtil.java:297)
   at org.openide.filesystems.FileUtil.removeRecursiveListener(FileUtil.java:349)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsListeners.remove(RepositoryUpdater.java:3884)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsWork.notifyRootsRemoved(RepositoryUpdater.java:2887)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsWork.getDone(RepositoryUpdater.java:2843)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doTheWork(RepositoryUpdater.java:1899)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task._run(RepositoryUpdater.java:3495)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.run(RepositoryUpdater.java:3437)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:574)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
   at java.lang.Thread.run(Thread.java:619)