With queue enabled, onepage checkout errors out on Graylog

With Queue Events enabled, whenever there is an exception (such as declined credit card) in the built in checkout, the returned Ajax message gets a 500 status code, and this throws the Javascript into a weird state.

This happens with Gralog enabled.

Error:

 Uncaught exception 'Zend_Log_Exception' with message 'Missing required data parameter: "version", "short_message" and "host" are required.'
