Shawn, thanks for the ideas. I actually decided to test the process on a test post and that worked (as it had previously). For some reason (beyond my knowledge) something in that specific post was preventing the URL from working. So, I copied and pasted the copy over to the new post, deleted the old one, and all is well in the world. Very weird. But it worked (and yes, I had updated all plugins and themes already). Thanks again. Bruce
