java.lang.IllegalStateException: Somebody changed internal state meanwhile!
Expected: Inited: true
Thread: Thread[AWT-EventQueue-1,6,IDE Main]
InProgress: true
MustNotify: false
Entries: 0; vis. entries: 0; Infos: 0; entriesSize: 0; entryToInfoSize: 0


current : Inited: true
Thread: null
InProgress: true
MustNotify: false
Entries: 0; vis. entries: 0; Infos: 0; entriesSize: 0; entryToInfoSize: 0


   at org.openide.nodes.EntrySupportLazy.setState(EntrySupportLazy.java:87)
   at org.openide.nodes.EntrySupportLazy.setEntries(EntrySupportLazy.java:499)
   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$1R.run(FolderChildren.java:188)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1452)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2032)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.IllegalStateException: Somebody changed internal state meanwhile!
Expected: Inited: true
Thread: Thread[AWT-EventQueue-1,6,IDE Main]
InProgress: true
MustNotify: false
Entries: 0; vis. entries: 0; Infos: 0; entriesSize: 0; entryToInfoSize: 0


current : Inited: true
Thread: null
InProgress: true
MustNotify: false
Entries: 0; vis. entries: 0; Infos: 0; entriesSize: 0; entryToInfoSize: 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.getNodesCount(EntrySupportLazy.java:339)
   at org.openide.nodes.FilterNode$Children$LazySupport.update(FilterNode.java:1811)
   at org.openide.nodes.FilterNode$Children.addNotifyImpl(FilterNode.java:1476)
   at org.openide.nodes.FilterNode$Children.addNotify(FilterNode.java:1469)
   at org.openide.nodes.Children.callAddNotify(Children.java:575)
   at org.openide.nodes.EntrySupportLazy.checkInit(EntrySupportLazy.java:116)
   at org.openide.nodes.EntrySupportLazy.getNodesCount(EntrySupportLazy.java:339)
   at org.openide.nodes.Children.getNodesCount(Children.java:509)
   at org.openide.explorer.view.VisualizerNode.getChildren(VisualizerNode.java:258)
   at org.openide.explorer.view.VisualizerNode.getChildren(VisualizerNode.java:248)
   at org.openide.explorer.view.VisualizerNode.getChildCount(VisualizerNode.java:325)
   at javax.swing.tree.DefaultTreeModel.getChildCount(DefaultTreeModel.java:168)
   at javax.swing.tree.FixedHeightLayoutCache$FHTreeStateNode.expand(FixedHeightLayoutCache.java:1135)
   at javax.swing.tree.FixedHeightLayoutCache.ensurePathIsExpanded(FixedHeightLayoutCache.java:645)
   at javax.swing.tree.FixedHeightLayoutCache.setExpandedState(FixedHeightLayoutCache.java:282)
   at javax.swing.plaf.basic.BasicTreeUI.updateExpandedDescendants(BasicTreeUI.java:1643)
   at javax.swing.plaf.basic.BasicTreeUI$Handler.treeExpanded(BasicTreeUI.java:3716)
   at javax.swing.JTree.fireTreeExpanded(JTree.java:2656)
   at javax.swing.JTree.setExpandedState(JTree.java:3427)
   at javax.swing.JTree.expandPath(JTree.java:2163)
   at org.openide.explorer.view.BeanTreeView.showPath(BeanTreeView.java:160)
   at org.netbeans.modules.project.ui.ProjectTab$ProjectTreeView.access$1800(ProjectTab.java:697)
   at org.netbeans.modules.project.ui.ProjectTab$ProjectTreeView$2.run(ProjectTab.java:771)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:641)
   at java.awt.EventQueue.access$000(EventQueue.java:84)
   at java.awt.EventQueue$1.run(EventQueue.java:602)
   at java.awt.EventQueue$1.run(EventQueue.java:600)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:611)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)