This is also related to
bug# 1574049 (kdegraphics-thumbnailers 4:15.12.3-0ubuntu1 uses the wrong path for plugin libraries)
beeing reported 23.04.2016 here. Upstream bug-report exists.
This is also related to
bug# 1574049 (kdegraphics- thumbnailers 4:15.12.3-0ubuntu1 uses the wrong path for plugin libraries)
beeing reported 23.04.2016 here. Upstream bug-report exists.