There is an issue with Mac that causes the game to crash for some players right when a cutscene begins. .
A helpful poster on our forums discovered a helpful work-around for this issue, check it out here: http://forums.kleientertainment.com/showthread.php?10874-Shank-Mac-crashing-work-around
A helpful poster on our forums discovered a helpful work-around for this issue, check it out here: http://forums.kleientertainment.com/showthread.php?10874-Shank-Mac-crashing-work-around