java.lang.IllegalArgumentException: Data object does not contain a sun-web.xml graph.
        at org.netbeans.modules.j2ee.sun.ddloaders.multiview.web.SunWebBaseView.<init>(SunWebBaseView.java:59)
        at org.netbeans.modules.j2ee.sun.ddloaders.multiview.web.SunWebView.<init>(SunWebView.java:55)
        at org.netbeans.modules.j2ee.sun.ddloaders.multiview.web.SunWebOverviewMultiViewElement.createView(SunWebOverviewMultiViewElement.java:62)
        at org.netbeans.modules.j2ee.sun.ddloaders.multiview.DDMultiViewElement.componentShowing(DDMultiViewElement.java:72)
        at org.netbeans.core.multiview.MultiViewPeer.peerComponentShowing(MultiViewPeer.java:199)
        at org.netbeans.core.multiview.MultiViewCloneableTopComponent.componentShowing(MultiViewCloneableTopComponent.java:119)
Caused: java.lang.IllegalStateException: [Winsys] TopComponent org.netbeans.core.multiview.MultiViewCloneableTopComponent throws runtime exception from its componentShowing() method.
Please repair it! Probable cause is at org.netbeans.modules.j2ee.sun.ddloaders.multiview.web.SunWebBaseView.<init>(SunWebBaseView.java:59)
        at org.openide.windows.WindowManager.logThrowable(WindowManager.java:363)
        at org.openide.windows.WindowManager.componentShowing(WindowManager.java:334)
        at org.netbeans.core.windows.WindowManagerImpl.componentShowing(WindowManagerImpl.java:1022)
        at org.netbeans.core.windows.view.DefaultView.changeGUI(DefaultView.java:161)
        at org.netbeans.core.windows.ViewRequestor.dispatchRequest(ViewRequestor.java:269)
        at org.netbeans.core.windows.ViewRequestor.processRequest(ViewRequestor.java:245)
        at org.netbeans.core.windows.ViewRequestor.postRequest(ViewRequestor.java:183)
        at org.netbeans.core.windows.ViewRequestor.scheduleRequest(ViewRequestor.java:123)
        at org.netbeans.core.windows.Central.activateModeTopComponent(Central.java:1761)
        at org.netbeans.core.windows.WindowManagerImpl.topComponentRequestActive(WindowManagerImpl.java:1145)
        at org.openide.windows.TopComponent.requestActive(TopComponent.java:789)
        at org.netbeans.modules.xml.multiview.XmlMultiViewEditorSupport$5.run(XmlMultiViewEditorSupport.java:430)
        at org.netbeans.modules.xml.multiview.Utils.runInAwtDispatchThread(Utils.java:190)
        at org.netbeans.modules.xml.multiview.XmlMultiViewEditorSupport.openView(XmlMultiViewEditorSupport.java:425)
        at org.netbeans.modules.xml.multiview.XmlMultiViewEditorSupport.open(XmlMultiViewEditorSupport.java:443)
        at org.openide.awt.ActionDefaultPerfomer.actionPerformed(ActionDefaultPerfomer.java:67)
        at org.openide.awt.ContextAction$Performer.actionPerformed(ContextAction.java:223)
        at org.openide.awt.ContextManager.actionPerformed(ContextManager.java:237)
        at org.openide.awt.ContextAction.actionPerformed(ContextAction.java:106)
        at org.netbeans.modules.openide.util.ActionsBridge$ActionRunnable$1.run(ActionsBridge.java:108)
        at org.netbeans.modules.openide.util.ActionsBridge.implPerformAction(ActionsBridge.java:83)
        at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:67)
        at org.openide.awt.GeneralAction$DelegateAction.actionPerformed(GeneralAction.java:218)
        at org.openide.explorer.view.TreeView$PopupSupport.mouseClicked(TreeView.java:1544)
        at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:253)
        at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:252)
        at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:252)
        at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:252)
        at java.awt.Component.processMouseEvent(Component.java:6266)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3255)
        at java.awt.Component.processEvent(Component.java:6028)
        at java.awt.Container.processEvent(Container.java:2041)
        at java.awt.Component.dispatchEventImpl(Component.java:4630)
        at java.awt.Container.dispatchEventImpl(Container.java:2099)
        at java.awt.Component.dispatchEvent(Component.java:4460)
        at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4574)
        at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4247)
        at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4168)
        at java.awt.Container.dispatchEventImpl(Container.java:2085)
        at java.awt.Window.dispatchEventImpl(Window.java:2475)
        at java.awt.Component.dispatchEvent(Component.java:4460)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:125)
        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)