@z_z_z_z
was there an error like "code 2" during installation? I know about problems with disabled Antivir and at least 1 other AV-program which deleted the trainer-exe during installation no matter if AV is enabled or disabled

if necessary I can try uploading the exe from setup direclty, but you need all other files of the setup in this case too!
@nemon82
this game is only available as steam version and the trainer is working on it
the "problem" at start is a Steam-problem, because it doesn't allow the game to get started from another application than steam... so the trainer ask to start it, you select your version and steam says "ok, let me do it for you" and restart the select window... if you then choose the version again, civ5 will be started