League client alpha buged the game!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Full scenario: Today I got a messege from Riot when i loged in league that i was aproved for the alpha client and as a normal person i downloaded it and everything was perfect, then one friend invited me to play ranked and i had to change to the standard client. Still cool for now. We picked lanes, we entered in champ select, chose champs and when the game entered in the loading screen the game crashed. I hit Alt+Tab, closed the game, started it again and then i had a messege saying that there were some corrupted files and needed to repear them, but it did nothing, it just stod there at 0% and nothing