Error - K3b: the document cannot be opened

[Dan-cer]

This error message always appears when I have inserted a CD into the drive and then - as configured - K3b opens. It does not appear when I start K3b itself from the menu.
K3b is a KDE program that otherwise fits well into Linux Mint Cinnamon. And I can simply click away the error message and use the program. Nevertheless, I am curious as to what the message actually refers to. Which document?

On the web I only found a recommendation to change the rights with

Code: Select all

sudo chmod 4711 /usr/bin/{wodim,cdrdao} 

But that had no effect.

Does anyone have any ideas?