hey still having this problem, while i have assigned in frond end modules (like your demo) the K2 source to be certain categories i get the url something like that :k2/item/21659-2013-07-19-04-50-48 instead of [category_name]/item/21729-2013-07-19-04-50-48 what the hec is the matter? I dont want duplicates on my site...THIS IS A HUGE BUG