java.lang.IllegalArgumentException: Called DataObject.find on null
   at org.openide.loaders.DataObject.find(DataObject.java:495)
   at org.netbeans.modules.hibernate.wizards.HibernateCodeGenWizardDescriptor.isValid(HibernateCodeGenWizardDescriptor.java:125)
   at org.openide.WizardDescriptor.updateStateOpen(WizardDescriptor.java:917)
   at org.openide.WizardDescriptor.updateState(WizardDescriptor.java:861)
   at org.openide.loaders.TemplateWizard.updateState(TemplateWizard.java:734)
   at org.netbeans.modules.project.ui.NewFileWizard.updateState(NewFileWizard.java:122)
   at org.openide.WizardDescriptor$Listener.stateChanged(WizardDescriptor.java:2005)
   at org.openide.util.WeakListenerImpl$Change.stateChanged(WeakListenerImpl.java:329)
   at org.openide.loaders.TemplateWizardIterImpl.fireStateChanged(TemplateWizardIterImpl.java:273)
   at org.openide.loaders.TemplateWizardIterImpl.setIterator(TemplateWizardIterImpl.java:119)
   at org.openide.loaders.TemplateWizardIteratorWrapper.setIterator(TemplateWizardIteratorWrapper.java:79)
   at org.openide.loaders.TemplateWizard.setTemplateImpl(TemplateWizard.java:196)
   at org.openide.loaders.TemplateWizard.setTemplate(TemplateWizard.java:214)
   at org.openide.loaders.TemplateWizard.instantiateImpl(TemplateWizard.java:461)
   at org.openide.loaders.TemplateWizard.instantiate(TemplateWizard.java:377)
   at org.netbeans.modules.project.ui.actions.NewFile.doPerform(NewFile.java:157)
   at org.netbeans.modules.project.ui.actions.NewFile.access$200(NewFile.java:83)
   at org.netbeans.modules.project.ui.actions.NewFile$PopupListener.actionPerformed(NewFile.java:336)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
   at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1220)
   at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1261)
   at java.awt.Component.processMouseEvent(Component.java:6041)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
   at java.awt.Component.processEvent(Component.java:5806)
   at java.awt.Container.processEvent(Container.java:2058)
   at java.awt.Component.dispatchEventImpl(Component.java:4413)
   at java.awt.Container.dispatchEventImpl(Container.java:2116)
   at java.awt.Component.dispatchEvent(Component.java:4243)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4322)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:3986)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:3916)
   at java.awt.Container.dispatchEventImpl(Container.java:2102)
   at java.awt.Window.dispatchEventImpl(Window.java:2440)
   at java.awt.Component.dispatchEvent(Component.java:4243)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:148)
   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)