Hi, I've tried all sorts of solution. From the basics of restarting steam and my computer to deleting everything that has to do with the Walking Dead before re-installing it. Either way I just get a black screen when the game launches. Just black - nothing, and I have to CMD+alt+escape my way out. The game worked throughout episode 1-3. Was in the middle of episode 4 it suddenly would not start up again.
Processor 2.4 GHz Intel Core i7
Memory 4 GB 1333 MHz DDR3
Graphics AMD Radeon HD 6770M 1024 MB
Software Mac OS X Lion 10.7.5 (11G63)