products-page not showing products for some categories

Store URL: http://test.endon.co.uk
WordPress version: 3.6.1
WP e-Commerce version: 3.8.12.1
Gold Cart version: N/A
Theme: Blanco version 2.7

I did this: I have been adding new products, categories and sub-categories using the features provided by WP e-Commerce.

I expected WP e-Commerce to do this: If you follow the product pages through ‘Lighting’ -> ‘Collections, Families and Pendants’ -> ‘0406-CH’ (http://test.endon.co.uk/products-page/0406-bc/). The products are displayed correctly.

Instead it did this: However, I have started adding the rest of the categories and product range and it has started displaying the products-page incorrectly as you can see here ‘Lighting’ -> ‘Collections, Families and Pendants’ -> ‘124’ (http://test.endon.co.uk/products-page/214/). The products are not being displayed, the category name is replaced by ‘Products Page’ and the breadcrumb trail is missing. The product that has been assign to this category displayed fine at its direct address (http://test.endon.co.uk/products-page/214/124-5/) its just the category page that doesn’t display properly.

I can see in the source of the broken pages that the body contains the classes (page page-id-217 page-parent page-template-default logged-in admin-bar paged-214 page-paged-214 wpsc customize-support) where on the pages that do work the body contains the classes (archive tax-wpsc_product_category term-0406-bc term-9 logged-in admin-bar customize-support).

As far as I can tell the categories that work have been set up in the same way as those that don’t. Is there something I am missing?

http://wordpress.org/plugins/wp-e-commerce/