I've posted the profile on my server, here:
and a screenshot of the issue here, on an image-sharing site:
re: the image
A & B point to significant color differents (made all the more interesting bacause the paid profile is overall -lighter- than the other two profiles, yet A and B are darker tones.
C points to the obvious tonal jump
Look in the red column to the right of D and in the B column to see other "tonal banding" issues.
I did drop the profile into ColorThink, and it looks pretty normal at first glance (as do the other two.)
That's why I'm so puzzled...
Thanks again.