According to this thread: http://groups.google.com/group/google-appengine-java/browse_thread/thread/0068bf08c5fd3fef/4edb06eb6f316689?lnk=raot
The Hessian 4.0.3 library is not compatible with Google App Engine. Does anyone have a working version of Hessian to use for Google App Engine until 4.0.4 is released? Sincerely, Christoffer -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
