This is a discussion on desktop icon (black square at the bottom left) within the Tech Support forums, part of the Knight Online (ko4life.com) category; Does anyone know how to fix them if so please help me out.
SS of the problem
Re: Icons problem - black box in corner of each icon
A wild guess, someone has been experimenting with the Shortcut icon.
This is how to control such overlays
googled in 15 sec
those are arrows i got a black square lol
your arrows are bugged
just follow the manual and you will get rid of them