I'm having some trouble changing application icons on KDE (up-to-date with no other DEs installed). Using Kmenuedit did work fine but at some point over the last year I stopped being able to change icons at all. Kmenuedit still launches and I can still select a new icon but after clicking save (and seeing the usual "saving" loading bar complete) no changes ever take hold.
I've tried rebooting, logging out and back in and searching for solutions online. I found plenty of old posts complaining of this but the solutions that worked for them don't seem to work for me. I've tried running 'kbuildsycoca5' and deleting /var/tmp/kdecache-user.
Any help or hints would be much appreciated...