Could it be that it has something to do with that Fitzroy is double in your file?
I cannot test it out myself, but try removing the double entry and see if that helps.
Believe it or not, this time the error message means exactly what it says. You have two Fitzroys - both in Queensland, but at different locations.
I just added a unique ID column to the CSV file and it imported fine. I then opened your file as a text datasource, set the geographic role on Region and drew this map. It highlighted one error as shown.
Edit: I see Dana beat me to the draw.
Hahaha Saves time not having to be so wonderfully thorough and actually including screenshots etc
Only because due to the location of my repository I cannot use custom geocoding so I couldn't really try it out.