java.lang.NullPointerException
   at org.netbeans.modules.form.FormDesigner.isInDesigner(FormDesigner.java:542)
   at org.netbeans.modules.form.FormUtils.isVisualInDesigner(FormUtils.java:1547)
   at org.netbeans.modules.form.actions.DefaultSizeAction.getValidComponent(DefaultSizeAction.java:144)
   at org.netbeans.modules.form.actions.DefaultSizeAction.enable(DefaultSizeAction.java:64)
   at org.openide.util.actions.NodeAction$DelegateAction.resultChanged(NodeAction.java:615)
Caused: java.lang.reflect.InvocationTargetException
   at sun.reflect.GeneratedMethodAccessor25.invoke(GeneratedMethodAccessor25.java:0)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:459)
Caused: java.lang.reflect.UndeclaredThrowableException
   at $Proxy2.resultChanged(.java:0)
   at org.openide.util.lookup.ProxyLookup$1Notify.run(ProxyLookup.java:176)
   at org.openide.util.lookup.ProxyLookup.setLookups(ProxyLookup.java:182)
   at org.openide.util.lookup.ProxyLookup.setLookups(ProxyLookup.java:122)
   at org.openide.explorer.DefaultEMLookup.updateLookups(DefaultEMLookup.java:134)
   at org.openide.explorer.DefaultEMLookup.propertyChange(DefaultEMLookup.java:166)
   at org.openide.util.WeakListenerImpl$PropertyChange.propertyChange(WeakListenerImpl.java:196)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
   at org.openide.explorer.ExplorerManager$2.run(ExplorerManager.java:868)
   at org.openide.util.Mutex.doEvent(Mutex.java:1341)
   at org.openide.util.Mutex.readAccess(Mutex.java:348)
   at org.openide.explorer.ExplorerManager.fireInAWT(ExplorerManager.java:865)
   at org.openide.explorer.ExplorerManager$1AtomicSetSelectedNodes.fire(ExplorerManager.java:285)
   at org.openide.explorer.ExplorerManager.setSelectedNodes(ExplorerManager.java:296)
   at org.netbeans.modules.form.ComponentInspector.focusFormImpl(ComponentInspector.java:315)
   at org.netbeans.modules.form.ComponentInspector.focusFormInAwtThread(ComponentInspector.java:274)
   at org.netbeans.modules.form.ComponentInspector.focusForm(ComponentInspector.java:259)
   at org.netbeans.modules.form.FormEditor.closeForm(FormEditor.java:772)
   at org.netbeans.modules.form.FormEditorSupport.notifyClosed(FormEditorSupport.java:581)
   at org.netbeans.modules.form.FormEditorSupport.multiViewClosed(FormEditorSupport.java:615)
   at org.netbeans.modules.form.FormEditorSupport.access$400(FormEditorSupport.java:136)
   at org.netbeans.modules.form.FormEditorSupport$6.propertyChange(FormEditorSupport.java:711)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
   at org.netbeans.core.windows.RegistryImpl.doFirePropertyChange(RegistryImpl.java:321)
   at org.netbeans.core.windows.RegistryImpl.topComponentClosed(RegistryImpl.java:202)
   at org.netbeans.core.windows.WindowManagerImpl.notifyRegistryTopComponentClosed(WindowManagerImpl.java:1012)
   at org.netbeans.core.windows.WindowManagerImpl.notifyTopComponentClosed(WindowManagerImpl.java:984)
   at org.netbeans.core.windows.Central.removeModeTopComponent(Central.java:1000)
   at org.netbeans.core.windows.Central.userClosedTopComponent(Central.java:1989)
   at org.netbeans.core.windows.view.DefaultView.userClosedTopComponent(DefaultView.java:744)
   at org.netbeans.core.windows.view.ui.TabbedHandler.actionPerformed(TabbedHandler.java:324)
   at org.netbeans.swing.tabcontrol.TabbedContainer.postActionEvent(TabbedContainer.java:695)
   at org.netbeans.swing.tabcontrol.TabbedContainerUI.shouldPerformAction(TabbedContainerUI.java:165)
   at org.netbeans.swing.tabcontrol.plaf.DefaultTabbedContainerUI.access$2700(DefaultTabbedContainerUI.java:112)
   at org.netbeans.swing.tabcontrol.plaf.DefaultTabbedContainerUI$DisplayerActionListener.actionPerformed(DefaultTabbedContainerUI.java:1269)
   at org.netbeans.swing.tabcontrol.TabDisplayer.postActionEvent(TabDisplayer.java:580)
   at org.netbeans.swing.tabcontrol.TabDisplayerUI.shouldPerformAction(TabDisplayerUI.java:188)
   at org.netbeans.swing.tabcontrol.plaf.BasicTabDisplayerUI.access$1500(BasicTabDisplayerUI.java:120)
   at org.netbeans.swing.tabcontrol.plaf.BasicTabDisplayerUI$BasicDisplayerMouseListener.performCommand(BasicTabDisplayerUI.java:731)
   at org.netbeans.swing.tabcontrol.plaf.BasicTabDisplayerUI$BasicDisplayerMouseListener.potentialCommand(BasicTabDisplayerUI.java:716)
   at org.netbeans.swing.tabcontrol.plaf.BasicTabDisplayerUI$BasicDisplayerMouseListener.mouseReleased(BasicTabDisplayerUI.java:764)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
   at java.awt.Component.processMouseEvent(Component.java:6267)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
   at java.awt.Component.processEvent(Component.java:6032)
   at java.awt.Container.processEvent(Container.java:2041)
   at java.awt.Component.dispatchEventImpl(Component.java:4630)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4577)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4238)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4168)
   at java.awt.Container.dispatchEventImpl(Container.java:2085)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:137)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)