Guust and oldmankit. Thanks for your help. The curly quote was indeed the issue. I put in straight quotes and all worked as expected.
It seems that the one issue in this topic that remains is creating a dynamic link, ie. a link that includes the logged in user, that links to the “author”. I’m no developer but I continue to search for that answer as well. My goal is to have such a link to put into the very nice Theme My Login plugin’s custom profile page. Cheers.