I've added a custom post type called "Cruises". On the edit.php page, where all the posts of type "Cruise" are listed, the "Category" column is blank. To be more specific, the column header "Category" is listed, but there are no categories listed for any posts (Categories are enabled for this post type and each post has at least one category selected)...
here's a picture illustrating this:
Any help would be much appreciated.