snapcaster41

When attempting to launch SimCity 4 deluxe in Steam, I am presented with the error message "Failed to start game (app already running)." What do I do? i've never had this problem before. i have, however, had issues with the game crashing in game frequently so i'd have to save a lot so i didn't get rekt on progress. i've had 400+ hours put into the game up to this point and really enjoying it. i have the basic NAM mod applied to the game but nothing more. i'm not aware of any plug-ins or applications that could be interfering with the game, run on a win7 os on a laptop. there is no other users on my steam acct, so the idea of the 'app already running' makes no sense to me. any advice? would really hate to lose everything including the chance to play this game again as you can imagine.