We're talking about the workshop version of gm_fork, right? That map natively supports Nextbots, so Sanic should work right out of the box. I just tried it and everything seemed fine. Make sure that you don't have AI turned off or ignoring players (hold C and make sure the top two in the NPC menu are unchecked[i.imgur.com]).

If that all checks out and there's still a problem, I'll need to know a little bit more. Is Sanic not moving around at all? Where are you on the map (use "getpos" in the console if necessary)?

Oh. I feel like an idiot for not checking that. Thanks.