GMOD crash problem

I have a bit of a problem that is pissing me off.

When I join a server in gmod, the second its done downloading everything and done sending my client info, it crashes and gives me the ‘hl2_osx has quit unexpectedly’. Singleplayer works just fine. I deleted everything and it didn’t work. I uninstalled and reinstalled it. Also didn’t work. I need some help please! Whats going wrong?

I have that same problem, but on windows, someone help us!

SYSTEM SPECS
CPU:
VIDEO CARD:
RAM:

also list any addons you may have and make sure you try doing a clean install of garrysmod (renaming the garrysmod folder in steam/steamapps/<steamname>/garrysmod/

SYSTEM SPECS
CPU:2Gz Intel Core 2 Duo
VIDEO CARD:ATI,RadeonHD2400
RAM: 2gb

no addons