I have just tried to linearize the 129-Step Target. All went swimmingly. I have a few negative #'s and average the line above and below and entered that value in place of the negative numbers.
I saved the .tsv file and changed the extension to .txt.
When I dropped the two files onto the QTR-Linearize-Quad droplet, I didn’t get a -LIN.QUAD file. I did get a -out.txt.
Ok. I see the problem. You actually need to go to the File>Download As menu inside of the google spreadsheet. Do not use the File Download As menu on the computer.