Game Crashes after champ select

Hey guys, i need some help. A few days ago, i logged on LoL. I started up a match, but after champ select( when the timer hit 0), the LoL icon appeared on screen, but then the Bugsplat crash message appeared (the one with scientist ziggs or something), ive been getting this message since then, ive tried everything, but its still there. is there any more methods for fixing it?????

(same on PBE)