I did all of this and still get a blank box, but went over to IE and it works. Something going on with Chrome i guess.
I ran the update released today and still have this issue.
Our site is having the same issue, if we click on the Advanced Layout Editor the content is blank, when you click back to Default all the content is gone. All the pages that were done with the Avia Layout Builder, when you go to that page, there is no content.