that file is definitely part of the install. Where did you buy the game, and did you let it install in the default locaction? Is there anything unusual about your system?
Did the game run ok before the expansion was installed? The installer should definitely be putting that file there. Is it maybe just hidden? (it shouldn’t be).
it was not the good folder…
the default location was C:\Program Files\Positech Games\Gratuitous Space Battles
but GSB is on C:\Program Files\Positech Games\Positech Games\Gratuitous Space Battles