[Client][Crash] Crash immediately after champ select

100% of the time the client crashes immediately after the champ select countdown ends. I can reconnect once everyone else has loaded, but obviously being in the game 3-4 minutes late is rather crippling. I am on mac. The music continues, if that helps. The client remains open with the loading pinwheel appearing whenever i mouse over the game. Instructions: Open game. Select a champ. Wait for game to start.