java.lang.IllegalArgumentException: Was not listening to Z:\PortableApps\CommonFiles\Java\jdk1.6.0_17\jre\classes
   at org.openide.filesystems.FileUtil.removeFileChangeListenerImpl(FileUtil.java:294)
   at org.openide.filesystems.FileUtil.removeRecursiveListener(FileUtil.java:349)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsListeners.remove(RepositoryUpdater.java:3846)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsWork.notifyRootsRemoved(RepositoryUpdater.java:2849)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsWork.getDone(RepositoryUpdater.java:2805)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doTheWork(RepositoryUpdater.java:1899)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task._run(RepositoryUpdater.java:3457)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.run(RepositoryUpdater.java:3399)
   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)