Great game, elite edition has slight problems

This game is a fantastic game if you like stealth, if you don’t it might be a little more difficult but you can still play most levels by going in guns blazing. However, i ran into some issues with the elite edition sniper challenge version. After I beat the campaign, i went back to try to play the sniper challenge and the game crashed. I thought that was odd, so i tried to reopen the game and try the normal version again. However, instead of opening that little pre-game window like it usually did, it went straight to the sniper challenge version and again crashed immediately. Now i am not only unable to play the sniper challenge but i cant even play the normal game. If anyone else has encountered this problem or has any other ideas, feel free to let me know as it would be much appreciated. Other than that, amazing game.

Shtewwsd about Hitman: Absolution - Elite Edition