Dear Hans, I installed the new upload and compiled “helloWorld.tex” created Sanjoy Mahajan. It runs well except the dummy figures are not appeared in the pdf output. However, I still got error message when try to compile “\startcolumnset … \stopcolumnset”. fonts > 'fallback modern-designsize rm 12pt' is loaded mtx-context | fatal error: return code: 1 The terminal process "zsh '-c', 'mtxrun --autogenerate --script context --autopdf --purge '/Users/graph/Library/Mobile Documents/com~apple~CloudDocs/texMain/exit11.tex''" terminated with exit code: 1. As you see in the log file, "return code: 11" is changed to “return code: 1”. It might be the problem of system environment as you said. Thank you. Merry Christmas and Happy new year! Best regards, Dalyoung