java.lang.IllegalArgumentException: pathToRoot does not contain element
        at org.netbeans.modules.xml.xam.dom.AbstractDocumentModel.prepareChangeInfo(AbstractDocumentModel.java:273)
        at org.netbeans.modules.xml.wsdl.model.impl.WSDLModelImpl.prepareChangeInfo(WSDLModelImpl.java:257)
        at org.netbeans.modules.xml.xdm.xam.XDMListener.processEvent(XDMListener.java:198)
        at org.netbeans.modules.xml.xdm.xam.XDMListener.propertyChange(XDMListener.java:214)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
        at org.netbeans.modules.xml.xdm.XDMModel.fireDiffEvents(XDMModel.java:297)
        at org.netbeans.modules.xml.xdm.XDMModel.resetDocument(XDMModel.java:854)
        at org.netbeans.modules.xml.xdm.XDMModelUndoableEdit.undo(XDMModelUndoableEdit.java:88)
        at javax.swing.undo.CompoundEdit.undo(CompoundEdit.java:46)
        at org.netbeans.modules.xml.xam.AbstractModel$ModelUndoableEdit.undo(AbstractModel.java:594)
        at javax.swing.undo.UndoManager.undoTo(UndoManager.java:320)
        at javax.swing.undo.UndoManager.undo(UndoManager.java:398)
        at org.openide.text.CloneableEditorSupport$CESUndoRedoManager.access$3001(CloneableEditorSupport.java:2989)
        at org.openide.text.CloneableEditorSupport$CESUndoRedoManager$RenderUndo.run(CloneableEditorSupport.java:3150)
        at org.netbeans.editor.GuardedDocument.runAtomic(GuardedDocument.java:294)
        at org.openide.text.CloneableEditorSupport$CESUndoRedoManager$RenderUndo.<init>(CloneableEditorSupport.java:3130)
        at org.openide.text.CloneableEditorSupport$CESUndoRedoManager$RenderUndo.<init>(CloneableEditorSupport.java:3122)
        at org.openide.text.CloneableEditorSupport$CESUndoRedoManager.undo(CloneableEditorSupport.java:3022)
        at org.netbeans.modules.xml.xam.ui.undo.FilterUndoManager.undo(FilterUndoManager.java:154)
        at org.netbeans.modules.xml.xam.ui.undo.CompoundUndoManager.undo(CompoundUndoManager.java:235)
        at org.netbeans.modules.xml.xam.ui.undo.QuietUndoManager.undo(QuietUndoManager.java:188)
        at org.netbeans.core.multiview.MultiViewPeer$DelegateUndoRedo.undo(MultiViewPeer.java:773)
        at org.openide.actions.UndoAction.performAction(UndoAction.java:177)
        at org.openide.util.actions.CallableSystemAction$.run(CallableSystemAction.java:118)
        at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:77)
        at org.openide.util.actions.CallableSystemAction.actionPerformed(CallableSystemAction.java:114)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
        at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
        at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
        at java.awt.Component.processMouseEvent(Component.java:6134)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
        at org.openide.awt.ToolbarButton.processMouseEvent(ToolbarButton.java:61)
        at java.awt.Component.processEvent(Component.java:5899)
        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.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4301)
        at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:3965)
        at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:3895)
        at java.awt.Container.dispatchEventImpl(Container.java:2067)
        at java.awt.Window.dispatchEventImpl(Window.java:2458)
        at java.awt.Component.dispatchEvent(Component.java:4331)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        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)