ARAM bug...

I love playing ARAMs for fun and all that stuff, but since last night I've been having this bug that literally freezes the champ preparation screen just after you try to modify the runes, and you're unable to do anything, not even close the game, you also receive a Windows notification that says "failed to create dump file".

Doesn't happen all the time, but is around 1 every 4 matches [sg-janna]