I am guessing this topic is about finished. (Do I need to upgrade to i1Profiler?) I do have another question: We know how to change MeasurementTolerance. How can we, or me, change the minimum luminance lower than 80? I know, I know. Why? Please don't question. But I will say below 80, such as 70 and even I have discovered, 60, meets my needs, and benefits my workflow. I did phone and ask the nice man at x-rite, and, after some discussion with another of his colleagues, the answer was it cannot be done. Using 'custom' to change to lower number doesn't work. Snaps back to 80. It's not that important to me since I can use ColorEyes Display Pro, or i1 Match 3.6.3. But I sure would like to know. Cheers David B. Miller, Pharm. D., member Millers' Photography L.L.C. 3809 Alabama Street Bellingham, WA 98226 360 739 2826 digitalimaging@dnmillerphoto.com