maybe you haven't installed uplay,i had the same problem.
you have to install uplay,create a profile there,enter the game key to verify you own it and then open the game from uplay with steam still open.then you can play the game.the same goes for AC Brotherhood and Revelations.
Comment has been collapsed.
sorry i have no idea about mac,i always use windows
Comment has been collapsed.
1,049 Comments - Last post 2 hours ago by MeguminShiro
310 Comments - Last post 3 hours ago by mourinhos86
10 Comments - Last post 5 hours ago by Camryn
123 Comments - Last post 6 hours ago by RePlayBe
15 Comments - Last post 8 hours ago by FleecyBear
5 Comments - Last post 13 hours ago by Lugum
90 Comments - Last post 15 hours ago by JimLink
3 Comments - Last post 1 second ago by ithamore
62 Comments - Last post 10 minutes ago by reigifts
227 Comments - Last post 12 minutes ago by AnthonyYo
400 Comments - Last post 25 minutes ago by CheMan39
83 Comments - Last post 26 minutes ago by ucho
207 Comments - Last post 36 minutes ago by Mzos
9,322 Comments - Last post 46 minutes ago by Delisper
I took everyones advice and bought AC2 over ACB..Great dissission but I can't get past the launcher without it crashing. HELP!! I have a MAC ox Yosemite software btw
Comment has been collapsed.