Mo Creatures for Minecraft 1.7.4?

I recently downloaded and installed(after much difficulty because i'm a noob at modding) the Mo Creatures mod for Minecraft. It works, but I can't access the Custom Spawner settings like normal. I have installed it, but I can't change anything on it. When I go to mod options in-game i get some words on the middle in red that say "test 1"
"test 2"
"disabled"
What does this mean? How do I change spawn settings? Because barely any of the Mo Creatures mobs are spawning in.