Update. I've downloaded the xtreme 1.3.1 distribution and got the required jar file from there, so the class not found is gone.
Now I have NoClassDefFoundError sun.reflect.ReflectionFactory is a restricted class. Please see the GOogle App Engine Developers guide for more details. I think I might have reached the end of my experimentation with restlet. It doesn't look like it will support doing what I wanted. http://groups.google.com/group/google-appengine-java/browse_thread/thread/96442cc90c55d90f Okay, so it's possible to patch xStream to work with GAE. Anyone with an opinion of whether I'm wasting my time though? ------------------------------------------------------ http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=2709321

