UIMA AS service serializes Exception object which may contain user defined Exception class not available to the client

When AE throws an exception UIMA wraps it in AnalysisEngineProcessException which is handed off to UIMA AS. This exception is subsequently serialized as a java object and sent in a reply to the client. The client deserializes the cargo back to a java Exception and hands it off to the application via a callback. The problem is that the Exception stack trace may include user defined Exception class(es) which are not available to the client thus causing ClassNotFound while deserializing a reply. Modify UIMA AS service side to serialize an exception to a String and send that to the client.