KF Custom Character Help

I've made a custom character for Killing Floor, but he's locked for some reason. I have no idea how to change it so he can be played. His files all appear correctly, if I use a mutator (which I can't seem to get to work) I can play as him just fine, but I want him to start out unlocked.



tl;dr I made a custom character but I can't unlock him. :(