@The_J
thanks for answering faster than me
@00konichiwa00
if the trainer can start the game with the start-button you've installed Civ5 in original way... for this reason the game should be updated automatically by steam (in our tests it doesn't matter if you enable or disable the steam option for auto-updates, the game will always be updated automatically)... for this reason you shouldn't use the first but the latest version in the trainer... unfortunately a new update has been released this week, so the trainer shouldn't work until we've updated it again...
btw: your gameversion is visible in the mainmenu of the game
if the mods/DLCs don't use an own version of the file "CvGameCoreDLLFinal Release.dll", the trainer will be compatible, but with different/own GameCoreDLL it won't be compatible in most cases