Don’t know if you ever sorted this, but I was having the same problem and just figured it out. You can add additional images on the right hand side on a product page right above featured images is product gallery.
You can read more here. http://docs.woothemes.com/document/adding-product-images-and-galleries/
Hope that helps 🙂
Thanks so much for mentioning that <?php wp_footer(); ?> was needed. I’ve been scratching my head for a few days trying to figure it out.
