Recently I have moved to Linux and discovered I like Customization quite a lot. Thankfully KDE offers plenty of options for that.
However when I've changed some of the icons through the "Edit Applications" some of them have turned blank on the menu. The problem appears to be only on the menu, once I open the app I see my chosen icon on the dock.
Is there a cache file some where or a any way to refresh the menu?

::EDIT::
So to anyone facing the same problem, for me deleting the files at /home/USER/.cache/kmenuedit seems to have helped.