thanks a lot kroeatschge!! So a quite recent version from December 2017.
But do you have any idea how I can download that version now?
Because Plex obviously does not make older versions easily available from what I can see. There is a thread that describes it but that version number you gave me enough for downloading. There is a list of the exact version “spelling” that can be used to build the download url and get the desired file. For example the 1.9.3.4290 version needs the string “1.9.3.4290-9798172d4” to be used in that url to get to the download:
https://downloads.plex.tv/plex-media-server/1.9.3.4290-9798172d4/PlexMediaServer-1.9.3.4290-9798172d4-OSX.zip
