Thanks for letting me know.
-AI’s should not be placed manually, you just leave them as AI slots at the lobby and the game will do the rest automatically once the game start.
-I will look out the error you mention, probably an oversight by me! Thanks for reporting. 
I really enjoy this campaign, a question I had is are some of the factions supposed to have trebuchets and gunpowder weapons? Martel was in the 8th century, it seems the player does not have access which makes sense, but then some of the AI seems to have them.
Greetings!
In Charles Martel 5, my friend and I noticed green doesnt create troops and attack besides its initial troops. It makes the defensive part really easy by defending only against purple.
We tested multiple time and the same behavior happens.