Another thing you can do is to look at the stack trace, jump to the
definition and see which variable is being marshaled. If you have a
debugger, this would be even easier.
Not sure if it comforts you, but our next release will improve this
error message by including the field name.
regards,
--
Kohsuke Kawaguchi 408-276-7063 (x17063)
Sun Microsystems kohsuke.kawaguchi_at_sun.com