java.lang.NullPointerException
	at javax.swing.OverlayLayout.preferredLayoutSize(OverlayLayout.java:110)
	at java.awt.Container.preferredSize(Container.java:1558)
	at java.awt.Container.getPreferredSize(Container.java:1543)
	at javax.swing.JComponent.getPreferredSize(JComponent.java:1617)
	at javax.swing.ScrollPaneLayout.layoutContainer(ScrollPaneLayout.java:769)
	at java.awt.Container.layout(Container.java:1401)
	at java.awt.Container.doLayout(Container.java:1390)
	at java.awt.Container.validateTree(Container.java:1473)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validate(Container.java:1448)
	at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:379)
[catch] at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:113)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153)
	at java.awt.Dialog$1.run(Dialog.java:515)
	at java.awt.Dialog.show(Dialog.java:536)
	at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:800)
	at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:843)
	at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:831)
	at org.openide.util.Mutex.doEventAccess(Mutex.java:1146)
	at org.openide.util.Mutex.readAccess(Mutex.java:183)
	at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:816)
	at org.netbeans.core.NotifyException.updateState(NotifyException.java:294)
	at org.netbeans.core.NotifyException.access$400(NotifyException.java:55)
	at org.netbeans.core.NotifyException$2.run(NotifyException.java:225)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153)
	at java.awt.Dialog$1.run(Dialog.java:515)
	at java.awt.Dialog.show(Dialog.java:536)
	at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:800)
	at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:843)
	at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:831)
	at org.openide.util.Mutex.doEventAccess(Mutex.java:1146)
	at org.openide.util.Mutex.readAccess(Mutex.java:183)
	at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:816)
	at java.awt.Component.show(Component.java:1300)
	at java.awt.Component.setVisible(Component.java:1253)
	at org.netbeans.core.windows.services.DialogDisplayerImpl$1AWTQuery.showDialog(DialogDisplayerImpl.java:156)
	at org.netbeans.core.windows.services.DialogDisplayerImpl$1AWTQuery.run(DialogDisplayerImpl.java:96)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)