GMod still not working on Mac after Steam Pipe Update [not the no steam user error]

Earlier after the steam pipe update, every time a mac user tried to start GMod they’d get this glitch
Buttt apparently Garry fixed that so that’s all and well, but now when I start the game, the following happens:

"Initializing Serverside" - this takes at least 3-5 minutes
thus proceeds to “Finished!” and freezes the game indefinitely.

iMac Late 09’ model
Mountain Lion 10.8.3
ATI/AMD Radeon 4850m

I’ve tried:
1.) validating files
2.) restarting steam
3.) restarting computer

and no luck.