Hello! I have another trouble with K2. i have several items that are working correctly, however for some reason K2 adds weird parameters to the url.

the url is: k2-tags/kontakt where it should be just /kontakt
and this one: k2-comments/produktblad/k2-tags where it should be just /produkt

Why does it add these parameters to the url?
Other pages have normal url, like /about and /products

any suggestions?

The URLs are generated by the structure of your menus.

I have a similar problem. When I edit a menu item and save it the phrase "k2-categories" gets added to the url. Instead of saying www.mydomain.com/contact it writes www.mydomain.com/k2-categories/contact.

The phrase gets added to all menu items that I edit.

I use Joomla 2.5.6, K2 2.5.7 and Gavick template gk_bikestore.

@StreamAlex

It is probably happening because your contact menu link has the "k2-categories" menu link as parent.