Thank you all for the help.
The problem has been resolved. It was a corrupted file.
Getting a clean download of the 1.56 GB file on my antiquated DSL connection was problematic at best. On top of that, Xfrog seems to have been having server issues too. It took 3 or 4 tries, but I finally got a clean download. By that time, Xfrog had a DVD on a Fedex overnight shipment.
My contact at Xfrog was pleasant and very responsive. He made sure everything went according to plan. So thanks Planetside crew and thanks Xfrog.