About This File
The original developers left the game without any support, so they released a long ago this. I think, it will be useful anybody who owns the game on Steam.
Usage: Just extract, and move the files to the gamefolder. That's it. If it not works, then uninstall the game, and also delete the main game folder at "<Steam-folder>/steamapps/common/Mirage", then reinstall the game and repeat the process.
The original announcements and download pages are here: