hi, basically waypoints dont work for characters using dark ai unless that character is a neutral character, which is not much use for gaurds on patrol, to make your characters in neutral follow waypoints you need to make sure that these commands, ai start, if see, if triggered and if hurt(all of which are directly below where you choose if your ai is going to be neutral) are set to no action. see the screenshot if that is confusing
to make enemies follow waypoints your main ai needs to be pace, then set the commands above to no action. This works for me so hope it helps you. (sorry if i explained it badly, it sounded clearer in my head)
Najoko Entertainment