Wine: Runtime error when adding cover art

As the title explains, I am running MP3Tag v2.71 on Ubuntu Gnome, using Wine.
Whenever I select an image to add to my files (a JPG image into FLAC files), an error occurs.
See the attachments for the error message. The error was not written to the log file, so I don't see the need to upload that. :rolleyes:

see /t/17108/1

Thanks! :music: