Selected AnimCont returns as null

[frail arch]

I keep getting an error telling me Animator Controller is Null,

I do have a controller selected but it wont use it, anyone got any ideas?

[polar swan]

What if you remove and then add the FPS Animator again? It also might happen if there's a rig type mismatch - make sure that you use the Generic rig with the Generic animations, and the same goes for the Humanoids