WP e-Commerce Product Image Issue

I using WP e-Commerce Version 3.8.12.1 an I started adding products The first went fine but now the other products the images are not working I tried over and over with no luck the files are small enough but I just don’t know what the problem is. Can someone point me in the right direction

thanks

http://weirdalsworldofmusic.uphero.com

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