java.lang.NullPointerException
   at org.netbeans.modules.form.layoutdesign.LayoutDesigner.isUnplacedComponent(LayoutDesigner.java:738)
   at org.netbeans.modules.form.FormDesigner.updateAssistantContext(FormDesigner.java:1260)
   at org.netbeans.modules.form.FormDesigner.selectionChanged(FormDesigner.java:1195)
   at org.netbeans.modules.form.FormDesigner.addComponentToSelectionImpl(FormDesigner.java:1095)
   at org.netbeans.modules.form.FormDesigner.setSelectedComponents(FormDesigner.java:1037)
   at org.netbeans.modules.form.FormDesigner.syncComponentsFromNodes(FormDesigner.java:1178)
   at org.netbeans.modules.form.FormDesigner.access$500(FormDesigner.java:102)
   at org.netbeans.modules.form.FormDesigner$NodeSelectionListener.propertyChange(FormDesigner.java:1140)
   at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263)
   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.openide.explorer.ExplorerManager$1SetExploredContextAndSelection.run(ExplorerManager.java:390)
   at org.openide.util.Mutex.readAccess(Mutex.java:365)
   at org.openide.util.Mutex$1R.run(Mutex.java:1307)
   at org.openide.util.Mutex.doWrapperAccess(Mutex.java:1324)
   at org.openide.util.Mutex.readAccess(Mutex.java:354)
   at org.openide.explorer.ExplorerManager.setExploredContextAndSelection(ExplorerManager.java:411)
   at org.openide.explorer.view.BeanTreeView.selectionChanged(BeanTreeView.java:147)
   at org.openide.explorer.view.TreeView.callSelectionChanged(TreeView.java:867)
   at org.openide.explorer.view.TreeView$TreePropertyListener.run(TreeView.java:1503)
   at org.openide.util.Mutex$1Exec.run(Mutex.java:1244)
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1913)
   at org.openide.util.Mutex.postRequest(Mutex.java:1250)
   at org.openide.util.Mutex.postRequest(Mutex.java:1213)
   at org.openide.util.Mutex.postReadRequest(Mutex.java:568)
   at org.openide.explorer.view.TreeView$TreePropertyListener.valueChanged(TreeView.java:1473)
   at javax.swing.tree.DefaultTreeSelectionModel.fireValueChanged(DefaultTreeSelectionModel.java:634)
   at javax.swing.tree.DefaultTreeSelectionModel.notifyPathChange(DefaultTreeSelectionModel.java:1092)
   at javax.swing.tree.DefaultTreeSelectionModel.setSelectionPaths(DefaultTreeSelectionModel.java:293)
   at javax.swing.tree.DefaultTreeSelectionModel.setSelectionPath(DefaultTreeSelectionModel.java:187)
   at javax.swing.JTree.setSelectionPath(JTree.java:1631)
   at javax.swing.plaf.basic.BasicTreeUI.selectPathForEvent(BasicTreeUI.java:2371)
   at javax.swing.plaf.basic.BasicTreeUI$Handler.handleSelection(BasicTreeUI.java:3587)
   at javax.swing.plaf.basic.BasicTreeUI$Handler.mousePressedDND(BasicTreeUI.java:3564)
   at javax.swing.plaf.basic.BasicTreeUI$Handler.mousePressed(BasicTreeUI.java:3523)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:279)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:279)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:279)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:279)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:279)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:279)
   at java.awt.Component.processMouseEvent(Component.java:6501)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
   at java.awt.Component.processEvent(Component.java:6269)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4860)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4686)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4832)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4489)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4422)
   at java.awt.Container.dispatchEventImpl(Container.java:2273)
   at java.awt.Window.dispatchEventImpl(Window.java:2713)
   at java.awt.Component.dispatchEvent(Component.java:4686)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)
   at java.awt.EventQueue.access$000(EventQueue.java:101)
   at java.awt.EventQueue$3.run(EventQueue.java:666)
   at java.awt.EventQueue$3.run(EventQueue.java:664)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:680)
   at java.awt.EventQueue$4.run(EventQueue.java:678)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:677)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:153)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)