Thanks Steve for taking your time.
Yes I have Nvidia graphic card. It's a GTX780, and the driver is the latest.
I hope this is the case. Do you know which is the last Nvidia driver that doesn't give fits to our program? Maybe I can download it and install that that one.
Thanks a bunch.
So far the only solution that has worked is rolling back to an earlier driver. Even the newest driver seems to be troublesome.
I later saw the link in your first post, and that was what I did, and yes, my program works again.
Thanks a bunch!!!!!!!
Perhaps if we make some noise on the Nvidia Forum it will get some attention. I've created a post there, feel free to jump in.