[CRASH] Can't join any games

Hey! Anyone else having issues with the client crashing as soon as it tries to load the game? I tried custom game after it updated so I can practice Riven. My friend also had a problem in Aram. She was kogmaw and as soon as the countdown went to 0, it (the client) automatically crashed. She even try playing zilean and it did the same thing. So all in all, no matter what champ or what game we try to play it crashes. And before the small update, it would rarely crash on us. Even when we use school craptastic WiFi. I don't know what's wrong but I hope it gets fixed. Riot~~ ganbatte aka hwaiting aka good luck!