java.lang.NullPointerException
   at org.openide.util.ImageUtilities.icon2Image(ImageUtilities.java:289)
   at org.netbeans.modules.java.editor.overridden.IsOverriddenPopup$RendererImpl.paintComponent(IsOverriddenPopup.java:240)
   at javax.swing.JComponent.paint(JComponent.java:1056)
   at javax.swing.CellRendererPane.paintComponent(CellRendererPane.java:151)
   at javax.swing.plaf.basic.BasicListUI.paintCell(BasicListUI.java:227)
   at javax.swing.plaf.basic.BasicListUI.paintImpl(BasicListUI.java:317)
   at javax.swing.plaf.basic.BasicListUI.paint(BasicListUI.java:240)
   at javax.swing.plaf.ComponentUI.update(ComponentUI.java:161)
   at javax.swing.JComponent.paintComponent(JComponent.java:780)
   at javax.swing.JComponent.paint(JComponent.java:1056)
   at javax.swing.JComponent.paintToOffscreen(JComponent.java:5210)
   at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:290)
   at javax.swing.RepaintManager.paint(RepaintManager.java:1272)
   at javax.swing.JComponent._paintImmediately(JComponent.java:5158)
   at javax.swing.JComponent.paintImmediately(JComponent.java:4969)
   at javax.swing.RepaintManager$4.run(RepaintManager.java:831)
   at javax.swing.RepaintManager$4.run(RepaintManager.java:814)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:814)
   at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:789)
   at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:738)
   at javax.swing.RepaintManager.access$1200(RepaintManager.java:64)
   at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1732)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:709)
   at java.awt.EventQueue$3.run(EventQueue.java:703)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)