https://bugs.kde.org/show_bug.cgi?id=478422
--- Comment #6 from Arjen Hiemstra <ahiems...@heimr.nl> --- It's referring to the installation prefix. System installed things will be using `/usr` as prefix while self-built will be something like `$HOME/kde/usr` or similar. What the `install-sessions.sh` script does is purely copy a session configuration file from the self-built prefix to the system prefix, but that session configuration file will point at the self-built prefix. If you then run that session and launch software that is system-installed it will fail the KWin prefix check as the system software's prefix is `/usr` while KWin's prefix is `$HOME/kde/usr`. -- You are receiving this mail because: You are watching all bug changes.