Hi there,  the Pharo Spur VM provided by the Pharo team does not run  Debian Stable and possibly on other more conservative Linux distributions.  You may find a pre-compiled Spur32 Pharo VM that runs on  Debian Stable (and possibly on other distros) at:  https://swing.fit.cvut.cz/jenkins/job/pharo-vm-spur-swing/ Zeroconf for those is also available:  curl http://swing.fit.cvut.cz/download/pharo/vm-spur-swing | bash wget -O- http://swing.fit.cvut.cz/download/pharo/vm-spur-swing | bash Thanks a lot to Esteban and Damien for their help! Have fun!  Jan