[Ancient]

So far, my experience with ZM maps is: the bots will get stuck no matter what.

Zombie Mod Maps are very difficult to waypoint for and it seems that zombie mods require big spacious maps in order for the bots to not get stuck to each other, but then again they all hurdle around the goal waypoint and get stuck anyway.
They waypoints I've made are error free, however, the bots still get stuck in the Zombie Mod Maps.

I dislike Zombie Mod, so maybe another waypointer can help you.
Other waypointers:
Twente
Mattisbogus