Version.ini
From OuroDev
version.ini is used to check that the client and server versions match. The game client and dbserver will both load it, and the client sends its version to dbserver as part of the login process. If the client does not have the expected version, dbserver will close the connection.
If a version.ini file is not found, the registry will be checked instead.
Example client content:
[Settings] Version=2400.201208211101.1