Image by alles-schlumpf via FlickrWell, my guess was right. Posit Science was closed Friday and didn't change their message. Nasty me, I couldn't resist chiding David about their lack of customer focus when he followed up on my Friday message this noontime.
Anyway, David was very gracious and sorted out the problem quickly and confidently. It was one of those Windows software protection options several layers deep. Glenn had changed it from the default. Once it was changed back we were in business.
So, tomorrow is day one. I've decided to make it the first thing in my day -- before the phone starts ringing and I feel the pressure to respond.
I'll keep you posted.