Help Fixing My Rig Issue?

So I made a custom rig with the Character Creator Plugin. Link To Plugin

I fixed the joints, named the Motor6D's to the parts they were assigned to and it even played the animation perfectly in the Animation Editor by Roblox.

Here comes the problem. I made a script that plays the animation (loads the anim) into the rig like you would for any NPC so that I could test it out and see it play actually ingame or in test mode, and that's when it decides to not play properly but tilt it's head or jump in the air. (It's a very generic 4 legged animal rig and none of it's limbs move besides it's head. I've checked to make sure they were all un-anchored and even the HumanoidRootPart during testing. ] )

Any ideas how to fix this? This is my first customized rig.

Code Used To Load Animation Into The Rig

local anim = script.Parent.AnimationController:LoadAnimation(script.Parent.Animation)

while true do
    wait(2)
anim:Play()
end

This is a regular script located inside the Rig model