Whenever operation fails console will show "Unknown Error" with message being the exact copy of what came from serve -- e.g. "JBAS010440: failed to invoke operation: JBAS010447: Connection is not valid".


From user's point of view such messages are often unclear. As far as I know the server response is the only source of information about what went wrong, thus imrpoving messages itself might be a bit tricky. However it should be at least possible to parse error name from the response, instead of using general "Unknown Error"