java.lang.NullPointerException
   at org.netbeans.modules.notifications.center.NotificationCenterTopComponent.updateTableColumnSizes(NotificationCenterTopComponent.java:220)
   at org.netbeans.modules.notifications.center.NotificationCenterTopComponent.access$900(NotificationCenterTopComponent.java:96)
   at org.netbeans.modules.notifications.center.NotificationCenterTopComponent$5.run(NotificationCenterTopComponent.java:331)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:759)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:712)
   at java.awt.EventQueue$3.run(EventQueue.java:706)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:77)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:729)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:192)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:117)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:106)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:102)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:94)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:83)