java.lang.NullPointerException
   at org.netbeans.modules.form.layoutdesign.LayoutPersistenceManager.saveLayout(LayoutPersistenceManager.java:158)
   at org.netbeans.modules.form.layoutdesign.LayoutPersistenceManager.saveContainer(LayoutPersistenceManager.java:138)
   at org.netbeans.modules.form.layoutdesign.LayoutModel.saveContainerLayout(LayoutModel.java:1218)
   at org.netbeans.modules.form.GandalfPersistenceManager.saveLayout(GandalfPersistenceManager.java:3382)
   at org.netbeans.modules.form.GandalfPersistenceManager.saveContainer(GandalfPersistenceManager.java:3336)
   at org.netbeans.modules.form.GandalfPersistenceManager.saveAnyComponent(GandalfPersistenceManager.java:3309)
   at org.netbeans.modules.form.GandalfPersistenceManager.saveContainer(GandalfPersistenceManager.java:3353)
   at org.netbeans.modules.form.GandalfPersistenceManager.saveAnyComponent(GandalfPersistenceManager.java:3309)
   at org.netbeans.modules.form.GandalfPersistenceManager.saveContainer(GandalfPersistenceManager.java:3353)
   at org.netbeans.modules.form.GandalfPersistenceManager.saveAnyComponent(GandalfPersistenceManager.java:3309)
   at org.netbeans.modules.form.GandalfPersistenceManager.saveForm(GandalfPersistenceManager.java:3191)
   at org.netbeans.modules.form.FormEditor.saveFormData(FormEditor.java:422)
   at org.netbeans.modules.nbform.FormEditorSupport.saveDocument(FormEditorSupport.java:507)
   at org.netbeans.modules.nbform.FormEditorSupport$16.doSave(FormEditorSupport.java:1762)
   at org.netbeans.modules.nbform.FormEditorSupport$16.access$1400(FormEditorSupport.java:1733)
   at org.netbeans.modules.nbform.FormEditorSupport$16$1.run(FormEditorSupport.java:1745)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:241)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:727)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:688)
   at java.awt.EventQueue$3.run(EventQueue.java:686)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:697)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)