The free one for digital negatives only works with Density measurements, and the DataTool files don't do that conversion done for you like the QTR-LinearizeData applet. I would open the data tool file in the QTR-Linearize-Data applet and get the -out.txt file. Then select the Density column only, and paste it into the column. That should solve the problem.
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Re: unable to create a grey curve
2019-05-03 by richard@...