Black client screen after accepting a match found.

I now have a 30 minute restriction and -11 LP because it did this twice. The first time I thought it might have just been a one in a million chance. The second time the exact same thing happened and this is right after the client got updated. Man i'm just trying to try the new runes and masteries.. now i'm already -11 LP.

My in game name is ASE

Can not provide pictures anymore because i'll get a demote if i do.