{MAC CLIENT/LOADING SCREEN} Bugged and crashes after i select champ then load in game..

Ive been trying to get into a game for the past two days without any luck.... the client wont allow me to go any further than picking a champion... after thats done and the game loads in my screen freezes and is left on a grey screen. hasn't happened to me before the most recent patch was installed... I've bugs [sg-shisa] platted, submitted a ticked and requested support. id really like for this to get fixed asap so i can continue playing ranked...