Using humanoid animation on humanoid modle.

I have some animations setup to work with a humanoid in unity. I also have a model, who was created separate of these animations with it's own animations, it is humanoid, and it has a state machine made already.
I have previewed the model's avatar with these separate animations and it works fine in the preview. However when I add the animations to the state machine the model just sits there in the default pose when the state is reached. Any clues as to what could be my issue here?

EDIT:
The model's state machine works fine with the animations that came with the model, it just doesn't like the external ones.

 

are you sure that the external animation are set to Humanoid rig type in the import settings? Can you preview this external animation with your avatar that work?