I realize this is going to be an easy answer, but its one I've found nowhere and I've been scouring Google and reinstalling for an hour and a half, and since there's no search function for this forum I figured I should just ask:
Does anyone know what causes me to not have the detachment choices available when creating an army? I got the 7th update, and while I can use it it gives me the requirement for my battle-born that all units be in a detachment, but it's not even available to choose. Any help is appreciated; I saw someone on the AB40K Maintainers page commenting this as well, but he'd gotten no response.