I noticed after playing around a bit that Protectrons are now just floating heads and a back piece now. The body is invisible.

I extracted the meshes/creatures/protectron/skeleton.nif using the Fallout Mod Manager because I wanted to use the model for an activator.

Is that what caused the problem? Because it even occurs when the mod isn't active. I feel like somehow extracting from the BSA file removed the model from the game.