When I attempt to purchase a paypal subscription as an unauthenticated user I'm redirected to the DNN login page.

If I attempt to purchase a product as an unauthenticated user I'm brought to the shopping cart.  Then during checkout i'm given the option (on the catalok registration page) to register or to login.

Is the process of purchasing a paypal subscription suppose to just kick me to the DNN login page if I am not logged in already??  Does catalook handle the login the same way it would for  regular product??