NullPointerException - code pane down-arrow

Hi
  I am getting NullPointerException when I doubble Click code pane
down-arrow.
This happens only in jdk1.4.1 and not in jdk1.4.2.

The Exception is:
java.lang.NullPointerException
 at
org.netbeans.core.windows.view.ui.tabcontrol.TabTable.prepareRenderer(TabTab
le.java:133)
 at javax.swing.plaf.basic.BasicTableUI.paintCell(BasicTableUI.java:1149)
 at javax.swing.plaf.basic.BasicTableUI.paintCells(BasicTableUI.java:1051)
 at javax.swing.plaf.basic.BasicTableUI.paint(BasicTableUI.java:974)
 at javax.swing.plaf.ComponentUI.update(ComponentUI.java:142)
 at javax.swing.JComponent.paintComponent(JComponent.java:541)
 at javax.swing.JComponent.paint(JComponent.java:808)
 at
org.netbeans.core.windows.view.ui.tabcontrol.TabTable.paint(TabTable.java:28
9)
 at javax.swing.JComponent.paintWithOffscreenBuffer(JComponent.java:4771)
 at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4724)
 at javax.swing.JComponent._paintImmediately(JComponent.java:4668)
 at javax.swing.JComponent.paintImmediately(JComponent.java:4477)
 at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:410)
[catch] at
javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQu
eueUtilities.java:117)
 at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:178)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:448)
 at
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.ja
va:197)
 at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java
:150)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:144)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:136)
 at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)

With Regards
D.A.Dhinesh
Aztec Software & Technology Services Limited