switching site association and using renaming to fix 404 error message

I just created a new version of my site and switched the site association for benhersey.com address to the new site. Once I changed the site association, benhersey.com no longer took me to ANY site. I gave me an error message. I tried renaming the new site and then publishing to try to reinforce the new site association but I am still getting an error message. Also, when I have gone to publish after renaming, it's still showing the OLD name as the one that will be published. 

Please advise!

Thank you