java.lang.NullPointerException
        at org.netbeans.modules.editor.completion.CompletionLayoutPopup.isEnoughSpace(CompletionLayoutPopup.java:451)
        at org.netbeans.modules.editor.completion.CompletionLayoutPopup.showAlongOrNextOccupiedBounds(CompletionLayoutPopup.java:380)
        at org.netbeans.modules.editor.completion.CompletionLayout.updateLayout(CompletionLayout.java:279)
        at org.netbeans.modules.editor.completion.CompletionLayout$DocPopup.show(CompletionLayout.java:438)
        at org.netbeans.modules.editor.completion.CompletionLayout.showDocumentation(CompletionLayout.java:175)
        at org.netbeans.modules.editor.completion.CompletionImpl$8.run(CompletionImpl.java:1007)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        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)