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.getLiveUnit(LiveUnitWrapper.java:114)
        at org.netbeans.modules.visualweb.insync.models.FacesModel.getLiveUnit(FacesModel.java:597)
        at org.netbeans.modules.visualweb.designer.jsf.JsfForm.initDesignProjectListening(JsfForm.java:733)
        at org.netbeans.modules.visualweb.designer.jsf.JsfForm.initListening(JsfForm.java:270)
        at org.netbeans.modules.visualweb.designer.jsf.JsfForm.init(JsfForm.java:241)
        at org.netbeans.modules.visualweb.designer.jsf.JsfForm.access$200(JsfForm.java:131)
        at org.netbeans.modules.visualweb.designer.jsf.JsfForm$1$1.run(JsfForm.java:374)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)