1. A machine-implemented method comprising: receiving a request from a first computer system at a second computer system; determining, at the second computer system, that the first computer system utilizes a message catalog file that is not installed on the second computer system; sending, from the second computer, a catalog request that requests the message catalog file in response to determining that the message catalog file is not installed on the second computer system; receiving the message catalog file at the second computer system; and sending a response message from the second computer system to the first computer system using the received message catalog file.