No matches were found for subject:"Re\: Bean Serialization Problem\: com.google.gwt.user.client.rpc.SerializationException\: Type 'com.dg.common.client.beans.DGUser' was not assignable to 'com.google.gwt.user.client.rpc.IsSerializable' and did not have a custom field serializer. For security purposes, this type will not be serialized"