Gustavo, thank you a lot! It works!

I created an alias for the terminal, which shortens the output a little bit. I'm not a master of the grep instructions so I wasn't able to get rid of the date. But I hope it will help you: alias robofontOutput="tail -f -n 100 ~/Library/Application\ Support/RoboFont/robofont-3-py3.log | sed 's/> OUTPUT > ROBOFONT >>/>>>/; s/ >>/>>/'" Cheers

I ran into this issue as well, setting up RoboFont on a new computer. I'm not sure exactly what caused it, because I think I tried to install the shell command previously, but got caught with something else. Just in case someone else comes across this, I solved it by: installing PyObjC with pip install -U pyobjc (I found out this was already installed) navigating to /usr/local/bin/ deleting /usr/local/bin/roboFont installing the shell command again

well spaces in a folder are never a good idea :)