Hi Mark, thanks for the response.
When I first downloaded and installed the 767, my AV was not disabled.
But after I read the instructions on the CS site, I disabled Windows defender and uninstalled the 767, and re-downloaded it from the CS website. When I tried to install it again I got the warning you see above.

I then stopped everything with the 767.

I went back to the CS website and purchased the 757. I downloaded and installed that (with Windows defender still disabled) and had zero issues.

Is there something else that needs to be done besides disabling windows defender?