Help, gmod mac not able to join servers

I need some help and I have tried to look just about everywhere and so I decided to start a forum on here where someone can hopefully help me, when I try to join any server it will crash on the retrieving info screen at the last retrieving info bar, unless it is the first time I am joining the server in which it downloads everything that the server needs and then just crashes after all downloads are done so can someone please help me?
here are my specs:
i5 processor
4gb of ram
intel hd graphics 3000
osx lion
All help is respected and thanked, I have started a forum on steam but no one could help so I hope someone on here can

If the server has some perculiar models / materials out, then mac’s crash. Think garry is fixing it.

That would be your problem.