It should also be noted that you have to change the default factory spawner to the usermap spawner
select your actor (the floating thing that looks like a zombie) click remap class and type "usermap" and select the usermap spawner. The default ones doesn't have all the animations. also the error could be that you either didn't download everything you need or you didn't drag it into your root directory. Let me know if that doesn't helphow to do that?