java.lang.IndexOutOfBoundsException: Invalid index
   at javax.swing.DefaultRowSorter.convertRowIndexToModel(DefaultRowSorter.java:514)
   at javax.swing.JTable.convertRowIndexToModel(JTable.java:2642)
   at org.netbeans.modules.autoupdate.ui.UnitTable.getToolTipText(UnitTable.java:117)
   at javax.swing.ToolTipManager$insideTimerAction.actionPerformed(ToolTipManager.java:663)
   at javax.swing.Timer.fireActionPerformed(Timer.java:313)
   at javax.swing.Timer$DoPostEvent.run(Timer.java:245)
   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$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   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)