Today I opened up steam and noticed that it had downloaded an update for TF2. I let it download and when it was complete, I started the game. It was all working fine until I joined a server. Then TF2 suddenly quit and it gave me an error message that said something like "hl2_osx unexpectedly shut down". I restarted the game and tried joining another server, only to get the same error. I tried restarting Steam a few times, but I had no luck. I also tried rebooting my Macbook but it didnt help either. Does anyone know what might be the problem? Thanks in advance.