AI not moving even with everything!?

I followed this video to a T Link:Unreal Engine 4 Tutorial : AI Behaviour Tree #1 (Chase & Roam Updated) - YouTube but it seems that even with all that and yes iv got a navmesh volume box as he did, it still wont move a muscle, my AI is just stuck their not moving no animation no turning, iv racked my brain for hours trying to solve this please help!?.

P:S i did it on the rolling tutorial and the AI is the normal mannequin, so that should not be a problem.
PPS I dont ask questions much hopefully i did not do anything wrong.

No way to help you without seeing screen shots of how you set up everything.

Yes. Also what kind of Pawn is being Controlled by AIController?