The New aphla client wont lunch

i Am trying to update to the new client, but when ever i try and launch the thing it crashes. I can't even get to the log in screen. The only way for me to be able to play is if i uninstall league and reinstall, and even doing that i still can't get on to the alpha client. So idk what to do know can someone help me out? (ps i know the thing is spelled wrong