https://bugs.kde.org/show_bug.cgi?id=459569
--- Comment #1 from Nicolas Kokel <nicolas.ko...@proton.me> --- I uninstalled the AppImage, updated/upgrade the system, restarted the PC, installed the FlatPak instead. Trying to render the project returns the same rendering error. Started render process: /app/bin/melt -progress /var/tmp/kdenlive-MRlZJz.mlt out=308 Qt: Session management error: None of the authentication protocols specified are supported1 31 10 2 91 29 3 177 57 Rendering of /home/nicolas/Videos/ppPLUSLogoIntroc.mp4 aborted, resulting video will probably be corrupted. Frame: 177 -- You are receiving this mail because: You are watching all bug changes.