Hi devfra, > I upgraded Testing this morning and now Plasma 5 and all the qt > applications are broken.
I experienced something very similar this morning - the perils of `apt-get dist-upgrade`! I found that lots of stuff was removed and not upgraded. I cannot recall all of what I did to fix it, but I installed again: sddm-theme-breeze, kde-plasma-desktop, kde-standard, kdegraphics, kdemultimedia, kdepim and kdeutils and that got me going again. Good luck. Andy.