java.lang.IllegalStateException: Somebody changed internal state meanwhile!
Expected: Inited: false
Thread: Thread[org.netbeans.modules.project.ui.ProjectTab,1,system]
InProgress: true
MustNotify: false
Entries: 1; vis. entries: 1; Infos: 1; entriesSize: 1; entryToInfoSize: 1
1 entry Children.Keys.KE[FolderChildren.Pair[/tmp/ja/src/ja/Ja.java@69faa52c:5a974fc1,0],0] -> EntryInfo for entry: Children.Keys.KE[FolderChildren.Pair[/tmp/ja/src/ja/Ja.java@69faa52c:5a974fc1,0],0], node: null


 contained EntryInfo for entry: Children.Keys.KE[FolderChildren.Pair[/tmp/ja/src/ja/Ja.java@69faa52c:5a974fc1,0],0], node: null
current : Inited: true
Thread: null
InProgress: true
MustNotify: false
Entries: 1; vis. entries: 1; Infos: 1; entriesSize: 1; entryToInfoSize: 1
1 entry Children.Keys.KE[FolderChildren.Pair[/tmp/ja/src/ja/Ja.java@69faa52c:5a974fc1,0],0] -> EntryInfo for entry: Children.Keys.KE[FolderChildren.Pair[/tmp/ja/src/ja/Ja.java@69faa52c:5a974fc1,0],0], node: null


 contained EntryInfo for entry: Children.Keys.
   at org.openide.nodes.EntrySupportLazy.setState(EntrySupportLazy.java:87)
   at org.openide.nodes.EntrySupportLazy.setEntriesSimple(EntrySupportLazy.java:681)
   at org.openide.nodes.EntrySupportLazy.setEntries(EntrySupportLazy.java:458)
   at org.openide.nodes.EntrySupport.setEntries(EntrySupport.java:83)
   at org.openide.nodes.Children$Keys$2.run(Children.java:1556)
   at org.openide.util.Mutex$1Exec.run(Mutex.java:1246)
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1921)
   at org.openide.util.Mutex.postRequest(Mutex.java:1252)
   at org.openide.util.Mutex.postRequest(Mutex.java:1215)
   at org.openide.util.Mutex.postWriteRequest(Mutex.java:587)
   at org.openide.nodes.Children$Keys.applyKeys(Children.java:1565)
   at org.openide.nodes.Children$Keys.setKeys(Children.java:1509)
   at org.openide.loaders.FolderChildren.access$600(FolderChildren.java:73)
   at org.openide.loaders.FolderChildren$1R.run(FolderChildren.java:188)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.IllegalStateException: Somebody changed internal state meanwhile!
Expected: Inited: false
Thread: Thread[org.netbeans.modules.project.ui.ProjectTab,1,system]
InProgress: true
MustNotify: false
Entries: 1; vis. entries: 1; Infos: 1; entriesSize: 1; entryToInfoSize: 1
1 entry Children.Keys.KE[FolderChildren.Pair[/tmp/ja/src/ja/Ja.java@69faa52c:5a974fc1,0],0] -> EntryInfo for entry: Children.Keys.KE[FolderChildren.Pair[/tmp/ja/src/ja/Ja.java@69faa52c:5a974fc1,0],0], node: null


 contained EntryInfo for entry: Children.Keys.KE[FolderChildren.Pair[/tmp/ja/src/ja/Ja.java@69faa52c:5a974fc1,0],0], node: null
current : Inited: true
Thread: null
InProgress: true
MustNotify: false
Entries: 1; vis. entries: 1; Infos: 1; entriesSize: 1; entryToInfoSize: 1
1 entry Children.Keys.KE[FolderChildren.Pair[/tmp/ja/src/ja/Ja.java@69faa52c:5a974fc1,0],0] -> EntryInfo for entry: Children.Keys.KE[FolderChildren.Pair[/tmp/ja/src/ja/Ja.java@69faa52c:5a974fc1,0]
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:424)
   at org.openide.loaders.FolderChildren.refreshChildren(FolderChildren.java:205)
   at org.openide.loaders.FolderChildren.addNotify(FolderChildren.java:335)
   at org.openide.nodes.Children.callAddNotify(Children.java:575)
   at org.openide.nodes.EntrySupportLazy.checkInit(EntrySupportLazy.java:116)
   at org.openide.nodes.EntrySupportLazy.getNodes(EntrySupportLazy.java:272)
   at org.openide.nodes.Children.getNodes(Children.java:469)
   at org.openide.loaders.FolderChildren.getNodes(FolderChildren.java:264)
   at org.openide.nodes.FilterNode$Children$LazySupport.callGetNodes(FilterNode.java:1767)
   at org.openide.nodes.FilterNode$Children.getNodes(FilterNode.java:1606)
   at org.netbeans.spi.java.project.support.ui.PackageRootNode$PathFinder.findPath(PackageRootNode.java:416)
   at org.netbeans.spi.java.project.support.ui.PackageView.findPath(PackageView.java:121)
   at org.netbeans.modules.java.j2seproject.ui.J2SELogicalViewProvider.findPath(J2SELogicalViewProvider.java:238)
   at org.netbeans.modules.project.ui.ProjectsRootNode.findNode(ProjectsRootNode.java:190)
   at org.netbeans.modules.project.ui.ProjectTab.findNode(ProjectTab.java:625)
   at org.netbeans.modules.project.ui.ProjectUtilities$3$1.run(ProjectUtilities.java:290)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1452)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2032)