In the EPUB Export Options window - Metadata - two fields are translated into Danish. But this is not done correctly.
Re: field 3 "Created by" and 7 "Rights".

This Text: > should be translated into this

  Oprettet af: > Forfatter:

  Højre: > Copyright:

(because 'Forfatter' means 'Author' and this metadata information is requied in EPUBs.. and 'Højre' means the opposite of left ... so this is NOT the case here ;)