As posted on http://www.linuxgnut.com/dolphin-extract-menus-missing-in-kubuntu-1510 this is a practical fix for the problem:
sudo ln -s /usr/share/kde4/servicetypes/konqpopupmenuplugin.desktop /usr/share/kservicetypes5/
As posted on http:// www.linuxgnut. com/dolphin- extract- menus-missing- in-kubuntu- 1510 this is a practical fix for the problem:
sudo ln -s /usr/share/ kde4/servicetyp es/konqpopupmen uplugin. desktop /usr/share/ kservicetypes5/