I have used this plugin to create a custom post type. I have created some categories that I have assigned to some posts. I've added a categories widget to my page so that the posts appear categorised in a menu. This seems to work ok and when I assign new posts to the categories the count in the menu goes up. However, when you click on one fot he categories it gives you the message "Apologies, but no entries were found."
The page is here: http://istudyenglishonline.com/english-expressions-idioms/
Any help would be greatly appreciated!