Hello, I know this is a few weeks late, but I had the same problem. Although I had Veeps turned off, the game doesn't like it when you try to delete all of them. ( I am creating a Mexico scenario so there was no veeps needed.) For me it got confused and one of my leaders didn't have anyone listed for veep option. Idk why that mattered because the option was turned off, but as soon as I gave my leader a veep option, the game worked. Hope this solved your issue and anyone else's issue if they had it.