Halo 4 Flight Steam Can't Change Settings

Hello,

I have the Halo 4 flight installed on Steam and when I try to change settings like Vsync, etc it will not allow me to save anything. Keeps saying the Halo 4 controls are not bound. I can only discard the attempted changes.

Go go controls and see which buttons are not mapped, it happened to me too and there are a couple lol.