Pharo launcher on Linux Mint

Hi! I used Pharo launcher on Windows and Ubuntu before and never had any troubles. Now, I am trying to used it on Linux Mint without success. Once I start the freshly created image the appropriate VM is downloaded but the image is not started. A PharoDebug.log is created in the image folder complaining that it can't find the PharoVXX.sources files in the "pharo/bin/lib/pharo/5.0-201707201942" folder. After I copy the missing file into that folder the image is still not opened and no further logs are created or updated. A downloaded Pharo.zip from the Pharo website opens just fine. Is this a known issue? Thank you! Sebastian