Hello Graeme, I'm starting with the XRite data, and made the changes you mention, but got this message: "scanin: Error - File 'ColorCheckerSG.txt' no sets of data in first table" The txt file begins this way, so I don't see the problem: IT8.7/2 ORIGINATOR "Graeme Gill" DESCRIPTOR "Header to prepend to X-Rite digital_colorchecker_sg_l_a_b.txt file" CREATED "June 26, 2012" NUMBER_OF_FIELDS 4 BEGIN_DATA_FORMAT SAMPLE_ID LAB_L LAB_A LAB_B END_DATA_FORMAT NUMBER_OF_SETS 140 BEGIN_DATA A1 96.55 -0.91 0.57 A2 6.43 -0.06 -0.41 A3 49.7 -0.18 0.03 A4 96.5 -0.89 0.59 Thank you, Alex On May 20, 2013, at 7:27 PM, Graeme Gill wrote: > Alex Jamison wrote: >> H'mm. I tried the first step: txt2ti3 ColorCheckerSG.txt ColorCheckerSG > > That assumes you measured your chart. Is that what you did, or did you > download the reference from X-Rite ? > > If the latter, then you need to edit it to add the header and footer > rather than using txt2ti3 & spec2cie, as per the instructions. > > Graeme Gill. >