Thank you for advising me that the issue may rest with the display drivers and to ignore NVidia and Windows advice.
Turns out that, at least on my machine, the newer NVidia drivers were causing the problem -so I removed all of them and started from scratch.
After I cleaned them out, I went through the device manager and updated the display driver. I ended up with Version 6.14.10.4523 - not the latest 71.89 - and your beautiful screensaver works fine!
Think I will keep it this version as everything else is working just fine too. Thank you for your help!
Tofuanna
