Gmod crashes right on startup

Today I opened up gmod and it said “preparing to launch Garry’s Mod” and it closed and nothing happened.I tried deleting my local game content but that didnt work either.
The only thing that could’ve happened was the update crashed it. Is this happening for all mac users or are pc users expieriencing it aswell.

[editline]21st December 2012[/editline]

Edit: FIXED :slight_smile: