With desktop in folder view, I copy a file from another folder to the desktop. I used fff.mp3 for the example. I open fff.mp3 in vlc to play it. I close vlc then rename fff.mp3 to abc.mp3. I double click abc.mp3 to open it and get the error: Unable to run the command specified. The file or folder /home/alex/Desktop//fff.mp3 does not exist. This has happened several times - KDE is trying to open the old filename, and not use the new filename.
*** This bug has been marked as a duplicate of bug 382341 ***