CivIII crashes when I load scenario with custom civ

[WarlordMatt]

I just made a scenario with a custom civ in it (used to be Aztecs) but when start a new game as that civ or even another civ with the custom civ as an AI player the game crashes after a few turns.

Help???

Edit: Hey wait a sec I posted this in Civ II tech support. Can someone move this thread?