java.lang.NullPointerException at org.netbeans.modules.visualweb.designer.markup.RaveDocumentBuilderFactory.createDocumentBuilder(RaveDocumentBuilderFactory.java:146) at org.netbeans.modules.visualweb.designer.markup.RaveDocumentBuilderFactory.newDocumentBuilder(RaveDocumentBuilderFactory.java:127) at org.netbeans.modules.visualweb.designer.markup.MarkupServiceImpl.createRaveSourceDocumentBuilder(MarkupServiceImpl.java:338) at org.netbeans.modules.visualweb.api.designer.markup.MarkupService.createRaveSourceDocumentBuilder(MarkupService.java:235) at org.netbeans.modules.visualweb.insync.markup.MarkupUnit.parseDom(MarkupUnit.java:348) at org.netbeans.modules.visualweb.insync.markup.MarkupUnit.read(MarkupUnit.java:502) at org.netbeans.modules.visualweb.insync.SourceUnit.sync(SourceUnit.java:552) at org.netbeans.modules.visualweb.insync.faces.FacesPageUnit.syncSubUnits(FacesPageUnit.java:257) at org.netbeans.modules.visualweb.insync.beans.BeansUnit.sync(BeansUnit.java:205) at org.netbeans.modules.visualweb.insync.live.LiveUnit.sync(LiveUnit.java:337) at org.netbeans.modules.visualweb.insync.live.LiveUnitWrapper.sync(LiveUnitWrapper.java:154) at org.netbeans.modules.visualweb.insync.models.FacesModel.syncImpl(FacesModel.java:1093) at org.netbeans.modules.visualweb.insync.Model.sync(Model.java:219) at org.netbeans.modules.visualweb.insync.models.FacesModelSet.getFacesModel(FacesModelSet.java:634) at org.netbeans.modules.visualweb.insync.models.FacesModelSet.getFacesModelIfAvailable(FacesModelSet.java:396) at org.netbeans.modules.visualweb.designer.jsf.JsfForm.getJsfForm(JsfForm.java:321) at org.netbeans.modules.visualweb.designer.jsf.DesignerJsfServiceImpl.createDesignerMultiViewElement(DesignerJsfServiceImpl.java:70) at org.netbeans.modules.visualweb.project.jsfloader.JsfJavaEditorSupport$DesignerDesc.createElement(JsfJavaEditorSupport.java:562) 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.peerComponentShowing(MultiViewPeer.java:198) 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.visualweb.designer.markup.RaveDocumentBuilderFactory.createDocumentBuilder(RaveDocumentBuilderFactory.java:146) at org.openide.windows.WindowManager.logThrowable(WindowManager.java:361) at org.openide.windows.WindowManager.componentShowing(WindowManager.java:332) at org.netbeans.core.windows.WindowManagerImpl.componentShowing(WindowManagerImpl.java:1057) 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.addModeOpenedTopComponent(Central.java:757) at org.netbeans.core.windows.ModeImpl.addOpenedTopComponent(ModeImpl.java:311) at org.netbeans.core.windows.WindowManagerImpl.topComponentOpenAtTabPosition(WindowManagerImpl.java:1115) at org.netbeans.core.windows.WindowManagerImpl.topComponentOpen(WindowManagerImpl.java:1082) at org.openide.windows.TopComponent.open(TopComponent.java:434) at org.openide.windows.TopComponent.open(TopComponent.java:425) at org.openide.windows.CloneableOpenSupport.openCloneableTopComponent(CloneableOpenSupport.java:199) at org.netbeans.modules.visualweb.project.jsfloader.JsfJavaEditorSupport.access$000(JsfJavaEditorSupport.java:122) at org.netbeans.modules.visualweb.project.jsfloader.JsfJavaEditorSupport$2.run(JsfJavaEditorSupport.java:187) at org.openide.util.Mutex.doEvent(Mutex.java:1335) at org.openide.util.Mutex.writeAccess(Mutex.java:452) at org.netbeans.modules.visualweb.project.jsfloader.JsfJavaEditorSupport.open(JsfJavaEditorSupport.java:185) at org.netbeans.modules.visualweb.project.jsfloader.JsfJavaDataObject$OpenEdit.open(JsfJavaDataObject.java:261) at org.openide.actions.OpenAction.performAction(OpenAction.java:81) at org.openide.util.actions.NodeAction$DelegateAction$1.run(NodeAction.java:589) at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:77) at org.openide.util.actions.NodeAction$DelegateAction.actionPerformed(NodeAction.java:585) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.AbstractButton.doClick(AbstractButton.java:357) at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1225) at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1266) at java.awt.Component.processMouseEvent(Component.java:6263) at javax.swing.JComponent.processMouseEvent(JComponent.java:3267) 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:4238) 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: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)