Lucene Index Folder: /Users/nb/Library/Caches/NetBeans/dev/index/s927/js/4/1
Caused: java.lang.NullPointerException
   at org.netbeans.modules.parsing.impl.indexing.ClusteredIndexables.access$500(ClusteredIndexables.java:70)
   at org.netbeans.modules.parsing.impl.indexing.ClusteredIndexables$RemovedCollection$It.hasNext(ClusteredIndexables.java:490)
   at org.netbeans.modules.parsing.lucene.LuceneIndex._doStore(LuceneIndex.java:420)
   at org.netbeans.modules.parsing.lucene.LuceneIndex.store(LuceneIndex.java:481)
   at org.netbeans.modules.parsing.lucene.DocumentIndexImpl.storeImpl(DocumentIndexImpl.java:206)
   at org.netbeans.modules.parsing.lucene.DocumentIndexImpl.store(DocumentIndexImpl.java:174)
   at org.netbeans.modules.parsing.lucene.DocumentIndexImpl.store(DocumentIndexImpl.java:163)
   at org.netbeans.modules.parsing.impl.indexing.lucene.LayeredDocumentIndex.store(LayeredDocumentIndex.java:125)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.storeChanges(RepositoryUpdater.java:3234)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.storeChanges(RepositoryUpdater.java:3208)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.scanFinished(RepositoryUpdater.java:2357)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanSource(RepositoryUpdater.java:4986)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanSources(RepositoryUpdater.java:4679)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsWork.getDone(RepositoryUpdater.java:4384)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doTheWork(RepositoryUpdater.java:3042)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task._run(RepositoryUpdater.java:5405)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.access$4700(RepositoryUpdater.java:5074)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$3$1.run(RepositoryUpdater.java:5330)
   at org.netbeans.modules.parsing.impl.RunWhenScanFinishedSupport.performScan(RunWhenScanFinishedSupport.java:96)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$3.call(RepositoryUpdater.java:5326)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$3.call(RepositoryUpdater.java:5322)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:74)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.run(RepositoryUpdater.java:5322)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
   at java.util.concurrent.FutureTask.run(FutureTask.java:166)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2043)