java.lang.NullPointerException
   at org.netbeans.modules.j2ee.persistence.wizard.unit.PersistenceUnitWizard.instantiateWProgress(PersistenceUnitWizard.java:230)
   at org.netbeans.modules.j2ee.persistence.wizard.unit.PersistenceUnitWizard.instantiate(PersistenceUnitWizard.java:159)
   at org.openide.loaders.TemplateWizard$InstantiatingIteratorBridge.instantiate(TemplateWizard.java:1044)
   at org.openide.loaders.TemplateWizard.handleInstantiate(TemplateWizard.java:605)
   at org.openide.loaders.TemplateWizard.instantiateNewObjects(TemplateWizard.java:439)
   at org.openide.loaders.TemplateWizardIterImpl.instantiate(TemplateWizardIterImpl.java:253)
   at org.openide.loaders.TemplateWizardIteratorWrapper$ProgressInstantiatingIterator.instantiate(TemplateWizardIteratorWrapper.java:180)
   at org.openide.WizardDescriptor.callInstantiateOpen(WizardDescriptor.java:1626)
   at org.openide.WizardDescriptor.callInstantiate(WizardDescriptor.java:1570)
   at org.openide.WizardDescriptor.access$2300(WizardDescriptor.java:92)
   at org.openide.WizardDescriptor$Listener$2$1.run(WizardDescriptor.java:2257)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042)