java.lang.ClassCastException: javax.swing.plaf.nimbus.TabbedPaneTabbedPaneTabAreaPainter cannot be cast to com.sun.java.swing.Painter
        at org.netbeans.swing.tabcontrol.plaf.NimbusEditorTabDisplayerUI.paintBackground(NimbusEditorTabDisplayerUI.java:115)
        at org.netbeans.swing.tabcontrol.plaf.BasicTabDisplayerUI.paint(BasicTabDisplayerUI.java:363)
        at javax.swing.plaf.ComponentUI.update(ComponentUI.java:161)
        at javax.swing.JComponent.paintComponent(JComponent.java:778)
        at javax.swing.JComponent.paint(JComponent.java:1042)
        at javax.swing.JComponent.paintChildren(JComponent.java:879)
        at javax.swing.JComponent.paint(JComponent.java:1051)
        at org.netbeans.swing.tabcontrol.TabbedContainer.paint(TabbedContainer.java:968)
        at javax.swing.JComponent.paintChildren(JComponent.java:879)
        at javax.swing.JComponent.paint(JComponent.java:1051)
        at javax.swing.JComponent.paintToOffscreen(JComponent.java:5180)
        at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1508)
        at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1439)
        at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:318)
        at javax.swing.RepaintManager.paint(RepaintManager.java:1232)
        at javax.swing.JComponent._paintImmediately(JComponent.java:5128)
        at javax.swing.JComponent.paintImmediately(JComponent.java:4938)
        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:818)
        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:770)
        at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:712)
        at javax.swing.RepaintManager.access$700(RepaintManager.java:60)
        at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1647)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:235)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:603)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:286)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:201)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:191)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:186)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:178)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:139)