[DRG]

You're getting that message becasue I'm betting you're both using different versions of the game. It's got nothing to do with what operating system you both have. When you re-installed you may have missed a patch

Did you start a new game AFTER re-installing ??? Or did you just put the turn into the new location you moved the game to ?? You cannot do that if you did as the security is put in place to prevent that. You'll need to start the game all over right from the beginning using your new game location

Don