I am using the 'wpsc_start_category_query' function to list my product categories, to appear in my site's dropdown menu. I can't alter the display order though. I tried adding the 'order_by' attribute, but it doesn't change anything.
It looks like this used to work (http://getshopped.org/forums/reply/reply-to-finally-soved-how-to-order-product-category-groups-53/) but doesn't work in the newer versions (i'm using 18.104.22.168)
Here's my code: