[InsaneWallaby]

Are they mining at all? If they're just mining, you may have disabled a building that they require to build to get to the higher buildings (like a gateway, so they just sit there because they want to build a gateway but can't.) Is it the correct run AI at location script? Are you using the correct location? And is the location large enough for them to build a general base to get started? And does the trigger apply to the correct player? It may sound like I'm insulting your intelligence, but I'm not; I often screw up and check the wrong box or do something as trivial as that. Those are probably some of the likely problems with your trigger. If none of those are the problem, then the trigger is probably not executing; make sure that the conditions are reachable.
Make sure that you have enough extra farms as well, which it sounds like you do, but check to see if you have gone over 200 food with all of the units. Also, I sometimes find that multiple waiting triggers can interfere with each other on a complex map. Try making sure that you don't have some ungodly large wait time on another trigger if you have a wait time for running the AI script. If the AI script is based on a timer, try making it so that the AI has at least 10 seconds to activate. I also find that if you tell a trigger to execute exactly on a second of the timer that sometimes it will not do so. I'm not sure if any of these will help, but its worth a shot.