Where are Sessions are being started? [closed]

Go into wp-ecommerce/wpsc-includes/shopping_cart_functions.php and adjusting this line

if ( isset( $cart ) ) {
echo wpsc_shopping_basket_internals( $cart, false, true );
}

to this

//if ( isset( $cart ) ) {
echo wpsc_shopping_basket_internals( $cart, false, true );
//}