» How would you go about downloading the file upon registration?
C5 Extras > Support > Knowledge Base > Register User Pro > How would you go about downloading the file upon registration?

For this to work you need to have a knowledge about simple permissions andadvance permissions. What you can do is redirect them to another page (with permissions on that page to be viewable for registered users only) which has a link to the file. You can also put permission on the file itself if you want to further secure the file from guests.