java.lang.AssertionError
   at org.netbeans.modules.editor.structure.api.DocumentModel$DocumentModelModificationTransaction.addDocumentElement(DocumentModel.java:875)
   at org.netbeans.modules.editor.structure.api.DocumentModel.addRootElement(DocumentModel.java:576)
   at org.netbeans.modules.editor.structure.api.DocumentModel.<init>(DocumentModel.java:196)
   at org.netbeans.modules.editor.structure.api.DocumentModel.getDocumentModel(DocumentModel.java:241)
   at org.netbeans.modules.xml.text.breadcrumbs.EditorRegistryMonitor.findTextModel(EditorRegistryMonitor.java:105)
   at org.netbeans.modules.xml.text.breadcrumbs.EditorRegistryMonitor.componentActivated(EditorRegistryMonitor.java:130)
   at org.netbeans.modules.xml.text.breadcrumbs.EditorRegistryMonitor.propertyChange(EditorRegistryMonitor.java:82)
   at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327)
   at org.netbeans.api.editor.EditorRegistry.fireEvents(EditorRegistry.java:544)
   at org.netbeans.api.editor.EditorRegistry.focusGained(EditorRegistry.java:344)
   at org.netbeans.api.editor.EditorRegistry$FocusL.focusGained(EditorRegistry.java:675)
   at java.awt.AWTEventMulticaster.focusGained(AWTEventMulticaster.java:220)
   at java.awt.AWTEventMulticaster.focusGained(AWTEventMulticaster.java:219)
   at java.awt.Component.processFocusEvent(Component.java:6424)
   at java.awt.Component.processEvent(Component.java:6291)
   at java.awt.Container.processEvent(Container.java:2236)
   at java.awt.Component.dispatchEventImpl(Component.java:4891)
   at java.awt.Container.dispatchEventImpl(Container.java:2294)
   at java.awt.Component.dispatchEvent(Component.java:4713)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:986)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:610)
   at java.awt.Component.dispatchEventImpl(Component.java:4762)
   at java.awt.Container.dispatchEventImpl(Container.java:2294)
   at java.awt.Component.dispatchEvent(Component.java:4713)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:709)
   at java.awt.EventQueue$3.run(EventQueue.java:703)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:731)
   at java.awt.EventQueue$4.run(EventQueue.java:729)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)