How do you release yourself as a vassal?
That's because, like I say above, it's not up to date. Again, you need to use RevDCM, if you don't like any RevDCM features (like Revolutions, or Barbarian civs), just turn them off in the Custom game selection. To access AI Autoplay in RevDCM you need to enable debugging mode, but if you want to watch the AI that's essential anyway. Again, I'll repeat myself and tell you how, open up your Civ4's config file (the CivilizationIVl.ini file in your BtS My Documents folder, shortcut is _Civ4Config in the BtS program files) in notepad and find the cheatcode = 0 line, then change the 0 to chipotle. Once you do this it enables debugging options, the most pertinent option for a casual user is the reveal shortcut, press ctrl + z to reveal the map. To enable AI Autoplay in RevDCM press ctrl + shift + x. A version of RevDCM in installer form can be found here, and again you can play a game of just straight BtS with RevDCM, if that floats your boat; to do so, just turn off the extra options in the custom game start menu.I'd like to try this out too, but never managed to make ai autoplay mod work.
I have used this in LoR because I was stuck alone on an island and wanted to see how the AI would run. It pretty much just runs as an AI civ would run for how many turns you put.
(off topic)I just got an advice in another thread to use PIG. I think that one is from you PieceOfMind?
I think I will try it, and see if the gameplay changes to units and such aren't too big.