[Steven Zahm]

@ Denise

I browsed around for quite while; seems to work fine. When you get a no results and changing categories, do you have a search term entered? If you do, you will be filtering by the term and the category. So if you switch a category with a search term you will still be filtering by that term and if that term is not within the current category selection you will get no results.

I hope that helps.