Comment 11 for bug 1537719

Same problem here with ubuntu 16.06 and Kdenlive version 16.08.1

after "sudo apt-get install libqt5libqgtk2" problem persists

however problem solved after "sudo apt-get install kde-runtime", which automatically installed the following packages (167MB of space):

docbook-xsl fonts-dejavu fonts-dejavu-extra kactivities kate-data katepart
  kde-runtime kde-runtime-data kde-style-breeze kde-style-breeze-qt4
  kdelibs-bin kdelibs5-data kdelibs5-plugins kdoctools kpackagelauncherqml
  kpackagetool5 libattica0.4 libdlrestrictions1 libkactivities6
  libkatepartinterfaces4 libkcmutils4 libkde3support4 libkdeclarative5
  libkdecore5 libkdesu5 libkdeui5 libkdewebkit5 libkdnssd4 libkemoticons4
  libkf5activities5 libkf5calendarevents5 libkf5declarative-data
  libkf5declarative5 libkf5package-data libkf5package5 libkf5plasma5
  libkf5plasmaquick5 libkf5quickaddons5 libkf5style5 libkfile4 libkhtml5
  libkio5 libkjsapi4 libkjsembed4 libkmediaplayer4 libknewstuff3-4
  libknotifyconfig4 libkntlm4 libkparts4 libkpty4 libkrosscore4
  libktexteditor4 libkxmlrpcclient4 libnl-route-3-200 libntrack-qt4-1
  libntrack0 libphonon4 libplasma3 libpolkit-qt-1-1 libqca2 libqca2-plugins
  libqt5quickwidgets5 libsolid4 libstreamanalyzer0v5 libstreams0v5
  libthreadweaver4 libxcb-damage0 ntrack-module-libnl-0 oxygen-icon-theme
  oxygen5-icon-theme phonon phonon-backend-gstreamer
  phonon-backend-gstreamer-common plasma-framework
  plasma-scriptengine-javascript qml-module-org-kde-activities
  qml-module-org-kde-kquickcontrols qml-module-org-kde-kquickcontrolsaddons
  qml-module-qtquick-dialogs qml-module-qtquick-privatewidgets

Should be nice to know which of the packages is really needed and which not.

Regards.