I downloaded the game for mac a while ago, but only recently started playing it. I've been working through single player, but now I've reached a point where I don't know what to do. There's nothing new to research, no ufos are really showing up anymore, and the XVI is just slowly ticking up... Am I missing something? Or is there a new version out I should download? (currently running 2.2.1)
EDIT: Now I'm also getting these black screens where this "todo: invasion sequence" pops up every time I win a mission. What does that mean?