[crash] Game stops?

So this strange thing happened while i was playing with 2 friends. We got into a game as usually nothing was wrong no lags, no fps drops, no freeze, and then we all got "attempting to reconnect" sign and waited 2-3 only to exit to game and see that it vanished? We were only 10 minutes ingame....Also i got a bugsplat while in champ select so i quickly rebooted client expecting to wait 10 minutes since i thought i left the queue, but the game started somehow...