Hi Thierry, hi all, The Pharo catalog version of OSProcess is not working in the Pharo 6 release and I need to load OSProcess in one of my projects. I cannot load OSSubProcess instead, so no need to answer this mail talking about it. In-between version 2231 and 2241 of VMMaker, the vm parameter 1002 (os version), has changed on Mac from '1011.6' to '10.11.6'. OSProcess tests the version number against 1000, and should now test against 10. I checked the SqueakSource repo of OSProcess, I can see that the last version is 4.6.8 and the catalog configuration loads an older version, but I cannot see any fix related to the version number ? Can someone update the OSProcess configuration in the Pharo catalog so that it loads a working version in the Pharo 6 release or point me to an OSProcess configuration, outside of the catalog, which works in the release of Pharo 6 please ? Thank you very much. Clement