[Dorfmann]

I ran into this issue yesterday. There really should be a warning that the fastblit setting could potentially make the game unplayable on Mac. Hopefully you've already found the fix.

I fixed it by editing the app.cfg file, as was suggested above. Just search "Out of the Park Developments" in your Spotlight search, which should you take to a folder with a "config" subfolder. In there, you'll find the app.cfg file. Open it in a text editor program and change the "OpenGL" value to 0. Your game should start.