Well, I did read that *patches* could cause false positives, due to them being designed to alter code but I thought as this was a replacement file rather than a patch, that shouldn't apply.

Anyway, I can use start.exe (renamed to game.exe) from this archive instead to run the game anyway (as described in the nfo), which doesn't register as a possible trojan, so I don't see much point in taking a chance on this game.exe file.

I don't think I've ever used a no-cd exe before that caused an anti-virus alert either.