NPC T-Pose while running in combat

[Ducklin]

Been trying different things to get rid of this today, but when NPCs enter combat and walk/run, they end up T-Posing and sliding around. I'm not using any animation mods, and I have tried validating through stream and such, trying to fish through mods to figure out what might have caused this. 

I recently deleted a few animations in my date folder, I may have done so in a bit of a hurry, I wonder if this may have caused the problem?

[gvman3670]

Any time you add or remove animations you need to run the FNIS generator tool.