Hi folks! We've identified the cause of the Mac & Linux bug that was rendering the game unplayable and have fixed the problem. We tested it out on an OSX machine, and everything is working great! We don't have a Linux machine on which to test, but believe the fix we implemented should solve the problem there, too.
For those that care, the bug was caused by a directory discrepancy as a result of the different ways the game files are created & stored for the various operating systems.
I sincerely appreciate everyone's patience while we got this fixed! Happy gaming!
-Danny