java.lang.IllegalArgumentException: /data/work/src/netbeans-cm/bugtracking/build/classes-generated/org@30471856:6f20296a (valid: true) not in /data/work/src/netbeans-cm/bugtracking/build/classes-generated@b5bf9fe3:7761c4f1 (valid: true)
Children of /data/work/src/netbeans-cm/bugtracking/build/classes-generated@b5bf9fe3:74e6e44a are:
  [/data/work/src/netbeans-cm/bugtracking/build/classes-generated/org@30471856:6f20296a]
   at org.netbeans.api.java.classpath.ClassPath$Entry.includes(ClassPath.java:929)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.fileFolderCreatedImpl(RepositoryUpdater.java:638)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.access$5500(RepositoryUpdater.java:138)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$FCL.fileFolderCreated(RepositoryUpdater.java:6023)
   at org.openide.filesystems.DeepListener.fileFolderCreated(DeepListener.java:138)
   at org.openide.filesystems.DeepListener.fileFolderCreated(DeepListener.java:130)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectKeeper.fileFolderCreated(FileObjectKeeper.java:283)
   at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEventImpl(FCLSupport.java:142)
   at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEvent(FCLSupport.java:128)
   at org.openide.filesystems.FCLSupport.dispatchEvent(FCLSupport.java:105)
   at org.openide.filesystems.FileObject$ED.dispatch(FileObject.java:1314)
   at org.openide.filesystems.FileSystem$EventDispatcher.run(FileSystem.java:999)
   at org.openide.filesystems.EventControl.dispatchEvent(EventControl.java:84)
   at org.openide.filesystems.FileSystem.dispatchEvent(FileSystem.java:644)
   at org.openide.filesystems.FileObject.dispatchEvent(FileObject.java:635)
   at org.openide.filesystems.FileObject.fireFileFolderCreatedEvent(FileObject.java:595)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.fireFileFolderCreatedEvent(BaseFileObj.java:664)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.refreshImpl(FolderObj.java:502)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.refresh(BaseFileObj.java:835)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.refresh(FolderObj.java:564)
   at org.openide.filesystems.FileObject.refresh(FileObject.java:1202)
   at org.netbeans.modules.masterfs.watcher.Watcher$1.run(Watcher.java:397)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2048)