[Client] Game crahsed in middle of poro king

Game crashed in the middle of poro king and now i can't get the League of legends to come back up. The process "League of Legends (TM) client" refuses to be ended and I'm afraid I may have gotten hit with leave buster for this game! When I restart the client it acts normal but the message "Update Failed" "Unspecified error occurred. Please check the logs for more information" clicking either one closes the box but nothing else happens. Clicking launch makes the launcher go away and all the processes end except for one said above. HELP!