java.lang.NullPointerException
	at org.netbeans.modules.form.VisualReplicator.updateContainerLayout(VisualReplicator.java:298)
	at org.netbeans.modules.form.VisualReplicator.updateAddedComponents(VisualReplicator.java:344)
	at org.netbeans.modules.form.FormDesigner$FormListener.run(FormDesigner.java:2183)
	at org.netbeans.modules.form.FormLAF$2.run(FormLAF.java:216)
	at org.openide.util.Mutex.doEventAccess(Mutex.java:1201)
	at org.openide.util.Mutex.readAccess(Mutex.java:220)
	at org.netbeans.modules.form.FormLAF.executeWithLookAndFeel(FormLAF.java:201)
	at org.netbeans.modules.form.FormDesigner$FormListener.processEvents(FormDesigner.java:2110)
	at org.netbeans.modules.form.FormDesigner$FormListener.formChanged(FormDesigner.java:2078)
	at org.netbeans.modules.form.FormModel.fireEvents(FormModel.java:985)
[catch] at org.netbeans.modules.form.FormModel$EventBroker.run(FormModel.java:1094)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
	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)