Hello,
the person in charge of KDE in debian uploaded a new systemsettings package for Plasma 5 without having Plasma 5 in sid.
This is a very bad decision because this breaks the systemsettings program for all KDE SC 4 users while at the same time it's not possible to install Plasma 5 in debian (and it's waiting in the NEW queue).
So if you want to keep the systemsettings working in KDE SC 4, enable kdenext in your sources.list.
These are the versions I have available here:
# LANG=C apt-cache policy systemsettings
systemsettings:
Installed: 4:5.3.1+really4.11
Candidate: 4:5.3.1+really4.11
Version table:
*** 4:5.3.1+really4.11 0
500 http://packages.siduction.org/kdenext/ unstable/main amd64 Packages
100 /var/lib/dpkg/status
4:5.3.1-1 0
500 http://ftp.debian.org/debian/ sid/main amd64 Packages
500 http://incoming.debian.org/debian-buildd/ buildd-sid/main amd64 Packages
4:4.11.13-2 0
500 http://http.debian.net/debian/ sid/main amd64 Packages
Version 4:5.3.1-1 does NOT work, version 4:5.3.1+really4.11 does.
Please see http://forum.siduction.org/index.php?topic=5644.0