The map crashes about halfway through loading due to an Unhandled Exception

I love the map, but i have only 1 complaint. I am HORRIBLE at zombies, so I use the dev console to experience and have fun with the map. With this map however, no matter if I have Thereisacow set to 1337, use devmap, or even spdevmap, I can't use the console. Because of this, I cannot use the consol...