Hi Community,
Thanks for posting about this. We have seen eBay make several changes to their category structure over the past week and we just conducted an update to bring our categories up to date with eBay earlier this morning. If you are receiving an error message indicating your category is invalid for a category that you have been using for a while, it is most likely that eBay changed the category number of that category.
If you are receiving this error for a category number that is still valid, or if you are having any other problems selecting your listing categories, please contact our customer support team using the form on the following page of our site:
http://www.auctiva.com/help/requesthelp.aspx-Mike