Thanks for your help – everything is functioning fine. I hadn’t hacked the link-manager. It was corrupt php files.
What I did was unzip the Word Press files on my Macintosh and then uploaded them to the server. It looks like the Mac unzipper corrupted some of the files in subtle ways, as it was working okay with a few exceptions. I did a clean reinstall from a PC unzipped folder, and it looks like I’m in business…
Thanks again.