Sam,
Well, I just attempted to create a new WP site and everything went as it should (although I had to reboot my machine before the new site was available; kept getting a 404 error). The login information passed through correctly, so I was able to log into the admin area.
I didn’t do anything, so I’m not sure what changed. I have my original development site up and running, so that’s all working.
So yes, I guess the problem is solved; I don’t know what happened to do it, though.
Thank you for your assistance!
Respectfully,
Ronald