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Does this exception look familiar to anyone?  As far as I can tell, it
doesn't even touch my code at all.  And even though I'm using a fixed
seed so that it should be determined, the error only pops up sporadically.

- ------------------------------------------------------------
java.lang.IndexOutOfBoundsException: Index: 820, Size: 797
        at java.util.ArrayList.RangeCheck(ArrayList.java:547)
        at java.util.ArrayList.get(ArrayList.java:322)
        at javax.media.j3d.GroupRetained.getChild(GroupRetained.java:423)
        at javax.media.j3d.Group.getChild(Group.java:229)
        at
sim.portrayal3d.SparseFieldPortrayal3D.updateModel(SparseFieldPortrayal3D.java:110)
        at
sim.portrayal3d.FieldPortrayal3D.getModel(FieldPortrayal3D.java:182)
        at sim.display3d.Display3D.updateSceneGraph(Display3D.java:1142)
        at sim.display3d.Display3D.step(Display3D.java:1098)
        at sim.display.GUIState$Repeat.step(GUIState.java:606)
        at sim.display.GUIState.step(GUIState.java:428)
        at sim.display.Console$56.run(Console.java:2277)
        at java.lang.Thread.run(Thread.java:619)
- ------------------------------------------------------------

- --
glen e. p. ropella, 971-219-3846, http://tempusdictum.com
The only good is knowledge and the only evil is ignorance. -- Socrates

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