[CRASH] Trying to Go In-Game Crashes Everything, I weep.

Hi here. I'm running the latest patch as of 2.28.16 on Mac OS X El Capitan 10.11.14

About an hour ago, I started an ARAM game. Everything was all fine in the pre-game lobby, I was actually quite excited since I was going to get a chance to use my Eternum Nocturne skin.

Anyway, upon trying go In-Game, things just broke. The moment I should have gone into the loading screen everything went black. The LOL cursor did not appear. Clicking just made the Mac OS X error noise. I could not command-tab away from this screen. Eventually, I had to reboot to get out.

So, I restarted my computer and tried again. I opened up the launcher, logged in, and was presented with the "reconnect" button. So I clicked it, hoping I hadn't missed out on too much of the game. Too bad for me, the same thing happened again.

I tried rebooting three or four more times to the same effect. Now, the launcher won't even open and I am at a loss. I feel very bad for my teammates in that match and also my standing as a player.

Unfortunately, I don't even know if any of these issues even triggered bugsplat, so I don't know exactly how to provide detailed technical specs for this.

Any help?

Thank you for your time.