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java.lang.IllegalArgumentException: column must be valid, was-1	at org.jdesktop.swingx.JXTreeTable.isHierarchical(	at org.jdesktop.swingx.JXTreeTable.getToolTipText(	at javax.swing.ToolTipManager$insideTimerAction.actionPerformed(	at javax.swing.Timer.fireActionPerformed(	at javax.swing.Timer$	at java.awt.event.InvocationEvent.dispatch(	at java.awt.EventQueue.dispatchEventImpl(	at java.awt.EventQueue.access$500(	at java.awt.EventQueue$	at java.awt.EventQueue$	at Method)	at$JavaSecurityAccessImpl.doIntersectionPrivilege(	at java.awt.EventQueue.dispatchEvent(	at java.awt.EventDispatchThread.pumpOneEventForFilters(	at java.awt.EventDispatchThread.pumpEventsForFilter(	at java.awt.EventDispatchThread.pumpEventsForHierarchy(	at java.awt.EventDispatchThread.pumpEvents(	at java.awt.EventDispatchThread.pumpEvents(	at