Storytelling Alice Java Error on 7 of 14 machines

[MissMary]

This inquiry related to Storytelling ALICE, which our local area schools just love to use.

The following JAVA error is appearing on more of our XP SP3 machines as time goes by. We are trying to run Storytelling ALICE for an educator workshop but are down to only 7 of 14 machines. All machines should have same OS / patch level / Java version. Permissions for our (student) guest accounts *should* be the same.

Is this error related to permissions (perhaps some student accounts are not able to write to the C:\Program Files\StorytellingALICE\Required dir?); or, is it something else?

Any suggestions for a fix?

************************************************** *****
Alice version: Storytelling Alice 10/01/2007 os.name: Windows XP os.version: 5.1 os.arch: x86
java.vm.name: Java HotSpot(TM) Client VM
java.vm.version: 1.5.0_05-b05
user.dir: C:\Program Files\StorytellingALICE\Required
java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 7
at java.util.Vector.get(Unknown Source)
at javax.swing.plaf.basic.BasicDirectoryModel.getElem entAt(Unknown Source)
at javax.swing.plaf.basic.BasicListUI.updateLayoutSta te(Unknown Source)
at javax.swing.plaf.basic.BasicListUI.maybeUpdateLayo utState(Unknown Source)
at javax.swing.plaf.basic.BasicListUI.getCellBounds(U nknown Source)
at javax.swing.JList.getCellBounds(Unknown Source)
at javax.swing.JList.ensureIndexIsVisible(Unknown Source)
at sun.swing.FilePane.ensureIndexIsVisible(Unknown Source)
at sun.swing.FilePane.doDirectoryChanged(Unknown Source)
at sun.swing.FilePane.propertyChange(Unknown Source)
at java.beans.PropertyChangeSupport.firePropertyChang e(Unknown Source)
at java.beans.PropertyChangeSupport.firePropertyChang e(Unknown Source)
at java.awt.Component.firePropertyChange(Unknown Source)
at javax.swing.JFileChooser.setCurrentDirectory(Unkno wn Source)
at edu.cmu.cs.stage3.alice.authoringtool.dialog.SaveF orWebContentPane.guiInit(SaveForWebContentPane.jav a:222)
at edu.cmu.cs.stage3.alice.authoringtool.dialog.SaveF orWebContentPane.<init>(SaveForWebContentPane.java :42)
at edu.cmu.cs.stage3.alice.authoringtool.AuthoringToo l.dialogInit(AuthoringTool.java:605)
at edu.cmu.cs.stage3.alice.authoringtool.AuthoringToo l.<init>(AuthoringTool.java:385)
at edu.cmu.cs.stage3.alice.authoringtool.JAlice.main( JAlice.java:132)