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java.lang.ArrayIndexOutOfBoundsException: 245 >= 241	at java.util.Vector.removeElementAt(Unknown Source)	at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.collapse(Unknown Source)	at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.collapse(Unknown Source)	at javax.swing.tree.VariableHeightLayoutCache.setExpandedState(Unknown Source)	at javax.swing.plaf.basic.BasicTreeUI$Handler.treeCollapsed(Unknown Source)	at javax.swing.JTree.fireTreeCollapsed(Unknown Source)	at javax.swing.JTree.setExpandedState(Unknown Source)	at javax.swing.JTree.collapsePath(Unknown Source)	at com.mathworks.hg.peer.UITreePeer$4.run(UITreePeer.java:221)	at java.awt.event.InvocationEvent.dispatch(Unknown Source)	at java.awt.EventQueue.dispatchEvent(Unknown Source)	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.run(Unknown Source)