Just installed Attila and want to see how it runs with a Custom Battle. I have both armies set up, but the Start Battle button's grayed out. Both armies (mine and AI's) have generals. I have unlimited funds. Map's chosen. What am I missing? Do I have to play the Prologue to unlock CBs? I don't think that was the case with Rome 2. Maybe a bad install?

Any help would be appreciated.

Thanks.