Decided to try making a custom .quad for silver paper. Printed the neg, made the silver print, read it in ColorPort on my DTP-41, saved the data as TD .txt file, copied that into 129STEP_PIEZODN_CGATS_SMOOTHER spreadsheet, saved new smoothed as TD .txt file. All good so far. Then drag it and the master.quad file on top of QTR-Linearize-Quad.app, it creates a .txt file named *-out.txt, but no .quad file.
Am I missing something in this workflow?