You shouldn't redirect from empty_cart. You hinted have an empty_cart.rjs template, so that should display the cart or whatever.
Use Firebug and trace your XHR's so you can see what's being returned.
You shouldn't redirect from empty_cart. You hinted have an empty_cart.rjs template, so that should display the cart or whatever.
Use Firebug and trace your XHR's so you can see what's being returned.