using autobeans in a gwt-rpc call

I have a small application where I am using autobeans extensively both on server and gwt side. I have an issue though with gwt-rpc calls, autobeans are apparently not serializable which causes gwt to fail with:

com.google.gwt.user.client.rpc.SerializationException: Type '$Proxy85' was not included in the set of types which can be serialized by this SerializationPolicy

Is there any obvious way that autobeans could be sent client->server side? Gwt-rpc is not good enough? Sending it over as a JSON string imposes some manual labor, seems overkill, would rather just go with POJOs in that case.

/Cenk

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