java.lang.NullPointerException
   at java.awt.Component$NativeInLightFixer.removeReferences(Component.java:0)
   at java.awt.Component$NativeInLightFixer.componentRemoved(Component.java:0)
   at java.awt.Container.processContainerEvent(Container.java:0)
   at java.awt.Container.processEvent(Container.java:0)
   at java.awt.Component.dispatchEventImpl(Component.java:0)
   at java.awt.Container.dispatchEventImpl(Container.java:0)
   at java.awt.Component.dispatchEvent(Component.java:0)
   at java.awt.Container.remove(Container.java:0)
   at javax.swing.JLayeredPane.remove(JLayeredPane.java:0)
   at java.awt.Container.remove(Container.java:0)
   at javax.swing.PopupFactory$ContainerPopup.hide(PopupFactory.java:0)
   at javax.swing.PopupFactory$MediumWeightPopup.hide(PopupFactory.java:0)
   at javax.swing.PopupFactory$MediumWeightPopup.getMediumWeightPopup(PopupFactory.java:0)
   at javax.swing.PopupFactory.getMediumWeightPopup(PopupFactory.java:0)
   at javax.swing.PopupFactory.getPopup(PopupFactory.java:0)
   at javax.swing.PopupFactory.getPopup(PopupFactory.java:0)
   at org.netbeans.modules.editor.completion.CompletionLayoutPopup.show(CompletionLayoutPopup.java:304)
   at org.netbeans.modules.editor.completion.CompletionLayoutPopup.showAlongOccupiedBounds(CompletionLayoutPopup.java:336)
   at org.netbeans.modules.editor.completion.CompletionLayoutPopup.showAlongAnchorBounds(CompletionLayoutPopup.java:316)
   at org.netbeans.modules.editor.completion.CompletionLayout.updateLayout(CompletionLayout.java:262)
   at org.netbeans.modules.editor.completion.CompletionLayout$CompletionPopup.show(CompletionLayout.java:393)
   at org.netbeans.modules.editor.completion.CompletionLayout.showCompletion(CompletionLayout.java:142)
   at org.netbeans.modules.editor.completion.CompletionImpl$7.run(CompletionImpl.java:1017)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:0)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:0)
   at java.awt.EventQueue.access$000(EventQueue.java:0)
   at java.awt.EventQueue$1.run(EventQueue.java:0)
   at java.awt.EventQueue$1.run(EventQueue.java:0)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:0)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:0)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:0)