JaW Templates Support Forum

i've got a big problem with my site using GDN Theme. There's a news-section under www.pixeltyp.de (grey box on home, left side) with some entries. These entries belongs to certain categories (i.e. "videospiele) which are indicated by that little green box inside the thumbnails. 

now, if i click on that categorie "videospiele" i get the following error: Template: custom not exist!

Can you please tell me, how to fix this? :(

edit: i've set up an admin account for you.