at EUW Azir isn't released yet ( i don't know the status of other servers ) , so you can still use it w/o any problems
If you have problem with injecting - check the Requirements at the main topic and don't forget to turn off your antivirus and to run as administrator.
If it's still bugsplatting and don't injecting, try to catch a support on reddit/irc.
I am sorry, i have zero knowledge 'bout scripting & other stuff. My pc is weak ( 100 euro for whole thing ). But i have not any problems with injecting and bugsplatting.. So check, if all your steps were done right.
P.S. I've read a suggestion somewhere 'bout bugsplatting. Try to run the game in window mode ( borderless, so you won't notice any difference ) . I hope it'll help.