Reason why your cilent crashing after Mac OS X update.
Since the mac update is new, Steam is not supported on Mac OS X 10.8.3 yet. I'm running Mac OS X 10.8.2 and when I run Steam I don't get any error or crashes. Uninstall Steam and reinstall the cilent to update. Don't worry, this happend to all Mac OS X 10.8.3 users.
NOTE: THIS IS OLD NOW! Steam is now supported on the latest Mac OS X update.
Last edited by HydrixHD; May 25, 2013 @ 11:27am