Hello: I bought Cities XL Platinum last week in Steam; and it worked perfectly for a couple of days. However, whenever I try to play the game now, it crashes as soon as I clic "Play" in the Main Menu. I have already installed the "protection patch for Cities XL Platinum", checked the game cache, deleted the cities xl file in appdata; I'm positively sure I'm using my NVIDIA Video Card and I've restarted my PC and reinstalled the game but it doesn't seem to solve the matter. What can I do? Thank you for your help from now on.