java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: bsh.CallStack

I have been receiving this error off and on for sometime now.

Using:
jdk 1.6, bsh_2.04b

The error is difficult to reproduce because it seems random.  If I run the
same script on the same data that caused the error it never seems to
reproduce it.
This is very problematic.

I see that there is an old bug related to serialization.
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4171142
Might this be related?

thanks for the help
-ryan
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