Default [Q] Trouble rooting GS3 (747) with mac

Well, first I downloaded Kies to my mac so I could plug it in.

Did EVERYTHING according to the guide on galaxy3root dot com slash galaxy dash s3 dash root slash how dash to dash root dash galaxy dash s3 dash on dash mac dash osx slash

basically just type from terminal on mac after the phone is in developer mode

phone turns off, restarts, everything, but the superuser says it needs new binary file or something.

What does this mean? I tried installing the superuser repair app to no avail, not even that works.

I installed the root checker app and it says I'm not rooted.

WTF?

any help is greatly appreciated, thanks