What's the problem? Open konsole and type
sudo rm /usr/share/icons/oxygen/16x16/actions/object-order-back.png sudo rm <path to other files, that couldn't be owerwritten>
What's the problem? Open konsole and type
sudo rm /usr/share/ icons/oxygen/ 16x16/actions/ object- order-back. png
sudo rm <path to other files, that couldn't be owerwritten>