java.lang.IllegalStateException: Somebody changed internal state meanwhile! Expected: Inited: false Thread: Thread[AWT-EventQueue-1,6,IDE Main] InProgress: true MustNotify: false Entries: 11; vis. entries: 11; Infos: 11; entriesSize: 11; entryToInfoSize: 11 1 entry Children.Keys.KE[[MultiFileObject@1b1c48a[FormDesignerPalette/_Layouts_only_for_internal_use_],0],0] -> EntryInfo for entry: Children.Keys.KE[[MultiFileObject@1b1c48a[FormDesignerPalette/_Layouts_only_for_internal_use_],0],0], node: null 2 entry Children.Keys.KE[lderChildren.Pair[MultiFileObject@90e1bd[FormDesignerPalette/SwingContainers],0],0] -> EntryInfo for entry: Children.Keys.KE[lderChildren.Pair[MultiFileObject@90e1bd[FormDesignerPalette/SwingContainers],0],0], node: null 3 entry Children.Keys.KE[olderChildren.Pair[MultiFileObject@1d472df[FormDesignerPalette/SwingControls],0],0] -> EntryInfo for entry: Children.Keys.KE[olderChildren.Pair[MultiFileObject@1d472df[FormDesignerPalette/SwingControls],0],0], node: null 4 entry Children.Keys.KE[Fol 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$1R.run(FolderChildren.java:188) at org.openide.util.RequestProcessor$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: false Thread: Thread[AWT-EventQueue-1,6,IDE Main] InProgress: true MustNotify: false Entries: 11; vis. entries: 11; Infos: 11; entriesSize: 11; entryToInfoSize: 11 1 entry Children.Keys.KE[[MultiFileObject@1b1c48a[FormDesignerPalette/_Layouts_only_for_internal_use_],0],0] -> EntryInfo for entry: Children.Keys.KE[[MultiFileObject@1b1c48a[FormDesignerPalette/_Layouts_only_for_internal_use_],0],0], node: null 2 entry Children.Keys.KE[lderChildren.Pair[MultiFileObject@90e1bd[FormDesignerPalette/SwingContainers],0],0] -> EntryInfo for entry: Children.Keys.KE[lderChildren.Pair[MultiFileObject@90e1bd[FormDesignerPalette/SwingContainers],0],0], node: null 3 entry Children.Keys.KE[olderChildren.Pair[MultiFileObject@1d472df[FormDesignerPalette/SwingControls],0],0] -> EntryInfo for entry: Children.Keys.KE[olderChildren.Pair[MultiFileObject@1d472df[FormDesignerPalet 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.modules.palette.DefaultModel.getCategories(DefaultModel.java:154) at org.netbeans.modules.palette.DefaultSettings.(DefaultSettings.java:106) at org.netbeans.spi.palette.PaletteFactory.createPalette(PaletteFactory.java:165) at org.netbeans.spi.palette.PaletteFactory.createPalette(PaletteFactory.java:115) at org.netbeans.modules.form.palette.PaletteUtils.showPaletteManager(PaletteUtils.java:141) at org.netbeans.modules.form.actions.InstallBeanAction.performAction(InstallBeanAction.java:94) at org.openide.util.actions.CallableSystemAction$1.run(CallableSystemAction.java:129) at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:95) at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116) at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99) at org.openide.util.actions.CallableSystemAction.actionPerformed(CallableSystemAction.java:126) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) at javax.swing.AbstractButton.doClick(AbstractButton.java:376) at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833) at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877) at java.awt.Component.processMouseEvent(Component.java:6505) at javax.swing.JComponent.processMouseEvent(JComponent.java:3321) at java.awt.Component.processEvent(Component.java:6270) at java.awt.Container.processEvent(Container.java:2229) at java.awt.Component.dispatchEventImpl(Component.java:4861) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Component.dispatchEvent(Component.java:4687) at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4832) at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4492) at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4422) at java.awt.Container.dispatchEventImpl(Container.java:2273) at java.awt.Window.dispatchEventImpl(Window.java:2719) at java.awt.Component.dispatchEvent(Component.java:4687) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:703) at java.awt.EventQueue.access$000(EventQueue.java:102) at java.awt.EventQueue$3.run(EventQueue.java:662) at java.awt.EventQueue$3.run(EventQueue.java:660) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87) at java.awt.EventQueue$4.run(EventQueue.java:676) at java.awt.EventQueue$4.run(EventQueue.java:674) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:673) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139) at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)