Good point, my bad, turns out the .ai file is imported/created if you import the .wai file. Sorry 'bout that. You were right.
Anyhoo, I made a Custom AI based on my entry for the contest. When I changed the object editor data to include a new spell for the hero (Kyrbi0's "Look Out, Sir!"), it keeps trying to reference the old spell (Howl of Terror). The actual strategy hasn't changed. Any ideas?
EDIT: You could change the tutorial to try to reference a custom race. As far as I know, the AI will automatically use any abilities it has (though I think it might have to be run a few times to get the hang of it). I've also noticed that even if you have 4 computer players with the same exact AI, each on different teams, they'll each behave a little differently.