This is just a short tutorial that might help you if you’re currently using WP e-Commerce plugin, I just found this bug while trying to create Custom Product Page in a grid view design, I found out that shorcode is not working, so I began searching in their forum and fortunately I got this very simple solution, btw I’m using latest versions of WP e-Commerce plugin.
Put this snippet in your
functions.php> of your current theme, if you don’t have functions.php yet please create and paste this snippet.
function add_to_cart_ fixed ( $atts )
$output = wpsc_add_to_cart_button( $atts['id'], true );