Works standalone but not from web start, "Failed to build body from bytes"

I have seen this though a number of forums but never seem to get a good answer on whats behind this type of problem. In this case everything works fine when running the application from the command line. However, when running as web start application I get the "failed to build body from bytes". It should be noted this is an JMS application. Having said that, I am not sure what is different or what to look for to solve this problem. Could it be a classloader, ordering of jars......

Thanks for any hints.

[520 byte] By [dgherriga] at [2007-11-27 1:54:26]