Ok, I did the part were you kill the Omerta Bosses and Cochino took over. I went back to inform him that they were dead and all he says is something along the lines of "There's still work to be done." and the only options is Good-bye and I have more questions which just asks about the original recruiting of the Omertas. Any and all help would be appreciated. Also, I'm on Xbox, so no Console Commands for me.

I just read from the Wiki that it's a bug, just wondering if reverting back to an old save would fix it or if I'm forever screwed.

reverting would work.