Animation not blending properly

I’m currently working on replacing a placeholder player character with the mesh and animations my team gave me, and for whatever reason the running animation won’t play correctly in the walking state blend tree. It plays correctly when previewed or instantiated by itself, but in Mecanim and on the player character it just eases into a single frame of the idle animation.

The placeholder animations and all of the other new animations work correctly, it’s just this particular one. I’ve tried commenting out the code for that state in my animation manager, I deleted and recreated the blend tree, I set the walking state to just that animation alone… nothing works. Is this some odd bug or am I missing something obvious here?

Did you check weather the animation is looped or not, click on the animation/model and there should be an option saying “loop time”, check it