Thank you.
Amazing what a bit of common sense and the right question will bring out. I messed up. In short, NIK will not open Sony RAW files. When I used the JPGs from the five images, every thing worked as it should.
I was trying to see how Affinity HDR compared to the older NIK HDR. No contest, the Affinity while building a much bigger Tiff file had better (Truer) colors and seemed to be a better image than the image from the NIK set.
Again, my thanks.
Paul
PCR got a reaction from John Rostron in Sony Raw File opened in Affinity will not open in NIK or LR