Breadcrumbs nagivation 'error'

My site: http://www.jorendekoning.nl/

Somehow the nagivation gives error's.

Example: I go to (topnav) Leiderchap & Change , then I go to second k2 item > Essenties van Verandermanagement. > It should navitage this: Home / Leiderschap & Change / Boeken / Essenties Van Verandermanagement. However it shows this: Home / Boeken / Boeken / Essenties van verandermanagement.

It does this with everything. How is my site set up?

Category > Werkgeverschap
Subcategory > Blogs, Articles, Books, Video's.. etc.

Category > Leiderschap & Change
Subcategory > Blogs, Articles, Books, VIdeo's etc.

etc..

The main menu renders blogs, articles, books etc from each category.

How can I solve this?

It is all K2.

Solved.