[DanCooper]

Thanks a lot Dan, it worked.
One more thing, I want my images to be named logo.png, clearart.png, disc.png so I enabled the file naming under Expert. The problem is, in my movie folder, I end up with logo.png AND nameofmovie-logo.png
It's been years since I set that up the first time so I totally forgot what I need to uncheck....

Thanks a lot for all your work Dan, btw.

All checkboxes in "File Naming" exept the expert ones are predefined file names, e.g. "Kodi Extended => ClearLogo" is "<filename>-clearlogo.png". If you only want to use your manually in expert added file names than uncheck the predefined file name checkboxes.

Edit: here is a list of all predefined file names: Link