Sandboxie Support

So I figured this would be the best program to multi-box black ops 2 on my pc so I can have two people play Zombies on two screens. But it seems i can load into the menu of the game just fine but when I load up a map in solo or co-op. the screen turns black and all i see is the program version in the top right corner from the main menu and the program fails. It seems no matter what I do black ops wont load into a map within sandboxie.