Got the game through Steam, playing on Mac OSX Lion, and my save file doesn't update / game won't autosave. My save file hasn't moved from a save near the end of episode 2. I played nearly all through episode 3 twice yesterday - the first time no achievements unlocked and the game crashed after a pause and when i restarted my save file was all the way back at end of episode 2. The second time i played through episode 3, the achievements did unlock, i didn't take a chance pausing the game, but it got late so i decided to close the game. Checked to see if this time it saved and the save file is still stuck on episode 2. Hours of gameplay gone.
I've seen save file workarounds for PC but nothing on Mac, I apologise if this is a common question but i haven't seen my problem described exactly anywhere for Mac.
At the moment i really want to play this game but i don't think i can be bothered if i can't save my decisions and lose hours of game time replaying episodes that didn't save correctly.
TL;DR - Game won't autosave, lost hours replaying through episode 3 twice but game save file isn't updating and is stuck on episode 2 when i load my game.