DWR sometimes die on the GAE server

I'm creating web app on the Google App Engine. For the AJAX calling I use DWR. Latest DWR version doesn't work fine with gae, because of that I work with 2.0.6 version of the DWR.

On the local machine 开发者_如何转开发application works good. But on the Google server some methods called with errors. I only get errors in browser console (server logs are clear):

Any ideas? Why the behavior on the local and the server machines is different?

Thanks

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I found mistake in my server side code.

DWR 2 works fine for me. The question is closed.

Excuse me for your time.