java.lang.NullPointerException
        at org.netbeans.modules.xml.retriever.catalog.Utilities._getDocument(Utilities.java:528)
        at org.netbeans.modules.xml.retriever.catalog.Utilities.access$000(Utilities.java:104)
        at org.netbeans.modules.xml.retriever.catalog.Utilities$1.getLookup(Utilities.java:641)
        at org.openide.util.lookup.SimpleProxyLookup.checkLookup(SimpleProxyLookup.java:77)
        at org.openide.util.lookup.SimpleProxyLookup.lookup(SimpleProxyLookup.java:152)
        at org.netbeans.modules.xml.xam.AbstractModelFactory.getEffectiveAccessProvider(AbstractModelFactory.java:116)
        at org.netbeans.modules.xml.xam.AbstractModelFactory.getKey(AbstractModelFactory.java:108)
        at org.netbeans.modules.xml.xam.AbstractModelFactory.getModel(AbstractModelFactory.java:129)
        at org.netbeans.modules.web.jsf.api.facesmodel.JSFConfigModelFactory.getModel(JSFConfigModelFactory.java:79)
        at org.netbeans.modules.web.jsf.api.ConfigurationUtils.getConfigModel(ConfigurationUtils.java:100)
        at org.netbeans.modules.web.jsf.navigation.PageFlowController.setupGraphNoSaveData(PageFlowController.java:514)
        at org.netbeans.modules.web.jsf.navigation.PageFlowView.<init>(PageFlowView.java:109)
        at org.netbeans.modules.web.jsf.navigation.JSFPageFlowMultiviewDescriptor$PageFlowElement.getTopComponent(JSFPageFlowMultiviewDescriptor.java:157)
        at org.netbeans.modules.web.jsf.navigation.JSFPageFlowMultiviewDescriptor$PageFlowElement.init(JSFPageFlowMultiviewDescriptor.java:141)
        at org.netbeans.modules.web.jsf.navigation.JSFPageFlowMultiviewDescriptor$PageFlowElement.<init>(JSFPageFlowMultiviewDescriptor.java:137)
        at org.netbeans.modules.web.jsf.navigation.JSFPageFlowMultiviewDescriptor.createElement(JSFPageFlowMultiviewDescriptor.java:124)
        at org.netbeans.core.multiview.MultiViewModel.getElementForDescription(MultiViewModel.java:206)
        at org.netbeans.core.multiview.MultiViewModel.getActiveElement(MultiViewModel.java:127)
        at org.netbeans.core.multiview.MultiViewModel.getActiveElement(MultiViewModel.java:123)
        at org.netbeans.core.multiview.MultiViewPeer.showCurrentElement(MultiViewPeer.java:272)
        at org.netbeans.core.multiview.MultiViewPeer.showCurrentElement(MultiViewPeer.java:264)
        at org.netbeans.core.multiview.MultiViewPeer$SelectionListener.selectionChanged(MultiViewPeer.java:701)
        at org.netbeans.core.multiview.MultiViewModel.fireSelectionChanged(MultiViewModel.java:243)
        at org.netbeans.core.multiview.MultiViewModel.setActiveDescription(MultiViewModel.java:115)
        at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:293)
        at javax.swing.JToggleButton$ToggleButtonModel.setSelected(JToggleButton.java:237)
        at javax.swing.ButtonGroup.setSelected(ButtonGroup.java:147)
        at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:289)
        at org.netbeans.core.multiview.TabsComponent$ButtonMouseListener.mousePressed(TabsComponent.java:457)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:263)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
        at java.awt.Component.processMouseEvent(Component.java:6131)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
        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:3962)
        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)