java.lang.AssertionError
   at org.netbeans.modules.xml.xam.AbstractModelFactory.getModel(AbstractModelFactory.java:133)
   at org.netbeans.modules.web.jsf.api.facesmodel.JSFConfigModelFactory.getModel(JSFConfigModelFactory.java:70)
   at org.netbeans.modules.web.jsf.impl.metamodel.JsfModelImpl.createModel(JsfModelImpl.java:312)
   at org.netbeans.modules.web.jsf.impl.metamodel.JsfModelImpl.initModels(JsfModelImpl.java:338)
   at org.netbeans.modules.web.jsf.impl.metamodel.JsfModelImpl.access$000(JsfModelImpl.java:88)
   at org.netbeans.modules.web.jsf.impl.metamodel.JsfModelImpl$1$1.run(JsfModelImpl.java:368)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.AssertionError
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:422)
   at org.netbeans.modules.web.jsf.impl.metamodel.JsfModelImpl$1.propertyChange(JsfModelImpl.java:365)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
   at org.netbeans.modules.web.jsf.api.metamodel.ModelUnit.fireChange(ModelUnit.java:246)
   at org.netbeans.modules.web.jsf.api.metamodel.ModelUnit.access$100(ModelUnit.java:72)
   at org.netbeans.modules.web.jsf.api.metamodel.ModelUnit$Listener.fileChanged(ModelUnit.java:312)
   at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEventImpl(FCLSupport.java:145)
   at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEvent(FCLSupport.java:128)
   at org.openide.filesystems.FCLSupport.dispatchEvent(FCLSupport.java:105)
   at org.openide.filesystems.FileObject$ED.dispatch(FileObject.java:1114)
   at org.openide.filesystems.EventControl.invokeDispatchers(EventControl.java:208)
   at org.openide.filesystems.EventControl.exitAtomicAction(EventControl.java:182)
   at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:127)
   at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:542)
   at org.netbeans.modules.web.jsf.JSFFrameworkProvider.extendImpl(JSFFrameworkProvider.java:227)
   at org.netbeans.modules.web.jsf.wizards.JSFConfigurationPanel.extend(JSFConfigurationPanel.java:177)
   at org.netbeans.modules.web.project.ui.wizards.NewWebProjectWizardIterator.instantiate(NewWebProjectWizardIterator.java:191)
   at org.netbeans.modules.ide.ergonomics.newproject.FeatureOnDemandWizardIterator.instantiate(FeatureOnDemandWizardIterator.java:189)
   at org.openide.loaders.TemplateWizard$InstantiatingIteratorBridge.instantiate(TemplateWizard.java:1019)
   at org.openide.loaders.TemplateWizard.handleInstantiate(TemplateWizard.java:591)
   at org.openide.loaders.TemplateWizard.instantiateNewObjects(TemplateWizard.java:412)
   at org.openide.loaders.TemplateWizardIterImpl.instantiate(TemplateWizardIterImpl.java:256)
   at org.openide.loaders.TemplateWizardIteratorWrapper.instantiate(TemplateWizardIteratorWrapper.java:168)
   at org.openide.WizardDescriptor.callInstantiateOpen(WizardDescriptor.java:1541)
   at org.openide.WizardDescriptor.callInstantiate(WizardDescriptor.java:1498)
   at org.openide.WizardDescriptor.access$1700(WizardDescriptor.java:130)
   at org.openide.WizardDescriptor$Listener$2$1.run(WizardDescriptor.java:2069)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1957)