Hi I put the VM and the image of "Ecumes"= alpha PharoScripting on the same location /Volumes/Macintosh\ HD/Applications/Squeak/Squeak\ 3.8.21beta1U.app/ Contents/MacOS/Squeak\ VM\ Opt -headless /Volumes/Macintosh\ HD/ Applications/Squeak/Ecumes.image /Volumes/Macintosh\ HD/Applications/ Squeak/hello.st working too /Volumes/Macintosh\ HD/Applications/Squeak/Squeak\ 3.8.21beta1U.app/ Contents/MacOS/Squeak\ VM\ Opt -headless squeak.image hello.st working too /Volumes/Macintosh\ HD/Applications/Squeak/Squeak\ 3.8.21beta1U.app/ Contents/MacOS/Squeak\ VM\ Opt -headless Ecumes.image hello.st Scrip shell 1 working Pharo Scripting hello.st [ Console print: 'Scrip shell 1 working', String lf. Console print: 'Pharo Scripting'. ] - On unix we have -nodisplay and on mac -headless: would it be possible to have both the same? So we are making progress :)