java.lang.IllegalStateException: The model is not initialized or is broken.
   at org.netbeans.modules.xml.xdm.XDMModel.checkStableOrParsingState(XDMModel.java:1001)
   at org.netbeans.modules.xml.xdm.XDMModel.getDocument(XDMModel.java:839)
   at org.netbeans.modules.xml.xdm.nodes.NodeImpl.getNamespaceURI(NodeImpl.java:604)
   at org.netbeans.modules.xml.xam.dom.AbstractDocumentComponent.getQName(AbstractDocumentComponent.java:778)
   at org.netbeans.modules.xml.xam.dom.AbstractDocumentComponent.getQName(AbstractDocumentComponent.java:774)
   at org.netbeans.modules.maven.model.pom.impl.POMComponentImpl.getChildElementText(POMComponentImpl.java:162)
   at org.netbeans.modules.maven.model.pom.impl.VersionablePOMComponentImpl.getArtifactId(VersionablePOMComponentImpl.java:79)
   at org.netbeans.modules.maven.navigator.POMModelVisitor$SingleFieldNode.getShortDescription(POMModelVisitor.java:1199)
   at org.openide.explorer.view.VisualizerNode.getShortDescription(VisualizerNode.java:211)
   at org.openide.explorer.view.TreeView$ExplorerTree.getToolTipText(TreeView.java:2205)
   at javax.swing.ToolTipManager$insideTimerAction.actionPerformed(ToolTipManager.java:662)
   at javax.swing.Timer.fireActionPerformed(Timer.java:291)
   at javax.swing.Timer$DoPostEvent.run(Timer.java:221)
   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:148)
   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)