I have always used the Linearize-Data app to linearize my ink profiles (.txt files). I use the Eye1 spectrometer to measure a 21 step chart, drop this file on the Linearize-Data app. The output is a txt file with the LINEARIZE command that I copy and pace in my original ink profile. How can I use the Linearize-Quad app? I'm assuming I have to drop both the measurement and .quad file on the app. Can I use the Eye1 spectrometer data file that I use for Linearize-Data.? John