Same here, been facing errors from last night. Every new patch solves old issues but creates new ones. I can understand that but a tighter time frame should be implemented to resolve this, otherwise it stops being fun.
I'm not even getting into the game, I get to char select, choose a char, stare at the loading screen for a little while and then is promptly thrown out to the login screen with the error message "An error occurred, please wait a few minutes and try again.".