java.lang.IllegalStateException: WARNING: Going from readAccess to writeAccess, see #10778: http://www.netbeans.org/issues/show_bug.cgi?id=10778 
[catch] at org.openide.util.Mutex.enter(Mutex.java:436)
	at org.openide.util.Mutex.writeEnter(Mutex.java:388)
	at org.openide.util.Mutex.access$100(Mutex.java:67)
	at org.openide.util.Mutex$Privileged.enterWriteAccess(Mutex.java:1204)
	at org.openide.nodes.FilterNode.changeOriginal(FilterNode.java:327)
	at org.openide.loaders.InstanceDataObject$UpdatableNode.update(InstanceDataObject.java:423)
	at org.openide.loaders.InstanceDataObject$3.resultChanged(InstanceDataObject.java:594)
	at org.openide.util.lookup.AbstractLookup.notifyListeners(AbstractLookup.java:405)
	at org.openide.util.lookup.ProxyLookup$R.resultChanged(ProxyLookup.java:406)
	at org.openide.util.lookup.ProxyLookup.setLookups(ProxyLookup.java:109)
	at org.netbeans.core.xml.FileEntityResolver$Lkp.update(FileEntityResolver.java:493)
	at org.netbeans.core.xml.FileEntityResolver$Lkp.beforeLookup(FileEntityResolver.java:451)
	at org.openide.util.lookup.ProxyLookup$R.myBeforeLookup(ProxyLookup.java:413)
	at org.openide.util.lookup.ProxyLookup$R.computeResult(ProxyLookup.java:346)
	at org.openide.util.lookup.ProxyLookup$R.allItems(ProxyLookup.java:336)
	at org.openide.loaders.InstanceDataObject.updateLookup(InstanceDataObject.java:603)
	at org.openide.loaders.InstanceDataObject.getCookieFromEP(InstanceDataObject.java:525)
	at org.openide.loaders.InstanceDataObject.getCookie(InstanceDataObject.java:538)
	at org.openide.loaders.DataNode.getCookie(DataNode.java:293)
	at org.openide.nodes.NodeLookup.addCookie(NodeLookup.java:61)
	at org.openide.nodes.NodeLookup.beforeLookup(NodeLookup.java:93)
	at org.openide.util.lookup.AbstractLookup$R.allItems(AbstractLookup.java:734)
	at org.openide.nodes.FilterNode$FilterLookup$ProxyResult.updateLookup(FilterNode.java:1435)
	at org.openide.nodes.FilterNode$FilterLookup$ProxyResult.checkResult(FilterNode.java:1427)
	at org.openide.nodes.FilterNode$FilterLookup$ProxyResult.allItems(FilterNode.java:1489)
	at org.openide.nodes.Node$LookupEventList.init(Node.java:1323)
	at org.openide.nodes.Node.internalLookup(Node.java:176)
	at org.openide.nodes.Node.getLookup(Node.java:637)
	at org.openide.nodes.FilterNode$FilterLookup.checkNode(FilterNode.java:1348)
	at org.openide.nodes.FilterNode$FilterLookup$ProxyResult.checkResult(FilterNode.java:1427)
	at org.openide.nodes.FilterNode$FilterLookup$ProxyResult.allItems(FilterNode.java:1489)
	at org.openide.nodes.Node$LookupEventList.init(Node.java:1323)
	at org.openide.nodes.Node.internalLookup(Node.java:176)
	at org.openide.nodes.Node.getLookup(Node.java:637)
	at org.openide.windows.DefaultTopComponentLookup.updateLookups(DefaultTopComponentLookup.java:86)
	at org.openide.windows.TopComponent.setActivatedNodes(TopComponent.java:241)
	at org.openide.explorer.ExplorerPanel$PropL.propertyChange(ExplorerPanel.java:340)
	at org.openide.util.WeakListenerImpl$PropertyChange.propertyChange(WeakListenerImpl.java:131)
	at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:252)
	at org.openide.explorer.ExplorerManager.setSelectedNodes(ExplorerManager.java:219)
	at org.openide.explorer.ExplorerManager.setSelectedNodes1(ExplorerManager.java:355)
	at org.openide.explorer.ExplorerManager.setExploredContextAndSelection(ExplorerManager.java:320)
	at org.openide.explorer.view.BeanTreeView.selectionChanged(BeanTreeView.java:88)
	at org.openide.explorer.view.TreeView.callSelectionChanged(TreeView.java:611)
	at org.openide.explorer.view.TreeView$TreePropertyListener.run(TreeView.java:963)
	at org.openide.util.Mutex.postRequest(Mutex.java:867)
	at org.openide.util.Mutex.postReadRequest(Mutex.java:347)
	at org.openide.explorer.view.TreeView$TreePropertyListener.valueChanged(TreeView.java:933)
	at javax.swing.tree.DefaultTreeSelectionModel.fireValueChanged(DefaultTreeSelectionModel.java:629)
	at javax.swing.tree.DefaultTreeSelectionModel.notifyPathChange(DefaultTreeSelectionModel.java:1076)
	at javax.swing.tree.DefaultTreeSelectionModel.setSelectionPaths(DefaultTreeSelectionModel.java:287)
	at javax.swing.JTree.setSelectionInterval(JTree.java:2041)
	at javax.swing.plaf.basic.BasicTreeUI$TreeIncrementAction.actionPerformed(BasicTreeUI.java:3245)
	at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1530)
	at javax.swing.JComponent.processKeyBinding(JComponent.java:2438)
	at javax.swing.JComponent.processKeyBindings(JComponent.java:2473)
	at javax.swing.JComponent.processKeyEvent(JComponent.java:2401)
	at java.awt.Component.processEvent(Component.java:4909)
	at java.awt.Container.processEvent(Container.java:1569)
	at java.awt.Component.dispatchEventImpl(Component.java:3615)
	at java.awt.Container.dispatchEventImpl(Container.java:1627)
	at java.awt.Component.dispatchEvent(Component.java:3477)
	at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1713)
	at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:627)
	at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:831)
	at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:741)
	at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:592)
	at java.awt.Component.dispatchEventImpl(Component.java:3506)
	at java.awt.Container.dispatchEventImpl(Container.java:1627)
	at java.awt.Window.dispatchEventImpl(Window.java:1606)
	at java.awt.Component.dispatchEvent(Component.java:3477)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)