Hi Eric,
Thanks for your answer. Unfortunately http://zonuzon.nl/referenties/ is the category, so I can’t change it to a portfolio page template. The page is http://zonuzon.nl/zonnepanelen-referenties/ and is already set as a portfolio page template this is where all the messages are in. The messages in the portfolio page like http://zonuzon.nl/referenties/zonnepanelen-nijmegen-heyendaalseweg-b/ are placed in the Category “referenties”, perhaps this has got anything to do with it. The breadcrum I want in each and all of these messages must be “Zonnepanelen Referenties” and not “referenties”.
Hope this helps in any way by telling this. Appreciate your time and effort!