org.w3c.dom.DOMException: HIERARCHY_REQUEST_ERR: An attempt was made to insert a node where it is not permitted. 
        at com.sun.org.apache.xerces.internal.dom.ParentNode.internalInsertBefore(ParentNode.java:356)
        at com.sun.org.apache.xerces.internal.dom.ParentNode.insertBefore(ParentNode.java:284)
        at com.sun.org.apache.xerces.internal.dom.CoreDocumentImpl.insertBefore(CoreDocumentImpl.java:389)
        at com.sun.org.apache.xerces.internal.dom.NodeImpl.appendChild(NodeImpl.java:235)
        at com.sun.org.apache.xerces.internal.dom.CoreDocumentImpl.cloneNode(CoreDocumentImpl.java:347)
        at com.sun.org.apache.xerces.internal.dom.DocumentImpl.cloneNode(DocumentImpl.java:155)
        at org.apache.tools.ant.module.xml.AntProjectSupport.getDocument(AntProjectSupport.java:161)
        at org.apache.tools.ant.module.xml.AntProjectSupport.getProjectElement(AntProjectSupport.java:297)
        at org.apache.tools.ant.module.loader.AntProjectDataEditor.annotateWithProjectName(AntProjectDataEditor.java:112)
        at org.apache.tools.ant.module.loader.AntProjectDataEditor.messageName(AntProjectDataEditor.java:95)
        at org.apache.tools.ant.module.loader.AntProjectDataEditor$.getDisplayName(AntProjectDataEditor.java:140)
        at org.openide.nodes.Node.toString(Node.java:1244)
        at org.openide.util.lookup.InstanceContent$SimpleItem.getId(InstanceContent.java:220)
        at org.openide.util.actions.NodeAction$NodesL.resultChanged(NodeAction.java:464)
        at org.openide.util.lookup.SimpleProxyLookup.checkLookup(SimpleProxyLookup.java:111)
        at org.openide.util.lookup.SimpleProxyLookup.lookup(SimpleProxyLookup.java:152)
        at org.netbeans.modules.editor.GlobalContextAction.getContextActionMap(GlobalContextAction.java:66)
        at org.netbeans.modules.editor.MainMenuAction.setMenu(MainMenuAction.java:180)
        at org.netbeans.modules.editor.MainMenuAction.stateChanged(MainMenuAction.java:109)
        at org.netbeans.editor.Registry.fireChange(Registry.java:532)
        at org.netbeans.editor.Registry.activate(Registry.java:274)
        at org.netbeans.editor.EditorUI$.focusGained(EditorUI.java:280)
        at java.awt.AWTEventMulticaster.focusGained(AWTEventMulticaster.java:203)
        at java.awt.AWTEventMulticaster.focusGained(AWTEventMulticaster.java:202)
        at java.awt.AWTEventMulticaster.focusGained(AWTEventMulticaster.java:202)
        at java.awt.AWTEventMulticaster.focusGained(AWTEventMulticaster.java:202)
        at java.awt.Component.processFocusEvent(Component.java:6023)
        at java.awt.Component.processEvent(Component.java:5890)
        at java.awt.Container.processEvent(Container.java:2023)
        at java.awt.Component.dispatchEventImpl(Component.java:4501)
        at java.awt.Container.dispatchEventImpl(Container.java:2081)
        at java.awt.Component.dispatchEvent(Component.java:4331)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1848)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:880)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:511)
        at java.awt.Component.dispatchEventImpl(Component.java:4373)
        at java.awt.Container.dispatchEventImpl(Container.java:2081)
        at java.awt.Component.dispatchEvent(Component.java:4331)
        at sun.awt.X.XWindow$.run(XWindow.java:356)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        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)