Thanks for the tip. I tried to open the program with the Shift key down but it still only got as far as the interface with the Perspective View just a blank gray space. Thing is, I’ve never had any problems running C4D R11 with this card so maybe there’s something else at work here. It was doing just fine before I changed drivers on the card.
By the way, I’m having a devil of a time trying to retrain R12 to try to reconstruct where in the world to find textures on models created in R11. When it says that a texture is located at “preset//user.lib4d/materials/tex/image.jpg” I haven’t been able to locate where on my computer that is in order to tell R12 where to go to get it.
I guess upgrades are always a learning process. Thanks for your help.