Thanks chscag -I did check again last evening, and all was back to normal! Nothing (that I'm aware of) changed here at all, not even a restart. Just a couple of hours after I posted it was working well. The only change I noted was that the URL displayed in the results page looked a lot more appropriate and functional than that which I posted originally. For example:

is what is returned now!

Anyways, all's well that ends well!