Empty shopping cart in eCommerce after user regsitration/logon

I tried to switch the purchase policy to "flexible". Now I cam make my selection as anonymous, log in, and successfully checkout as registered.

However, when I decide to carry on anonymously, I am asked for my shipping and billing addrss twice. I have found out the only the first screen is valid, any stuff entered into the second (superfluous screen) is ignored.

Anyway, I would like to use "registered only" pruchase policy.

of Drupal and eCommerce. The problem appeared as soon as I changed the purchase policy to "Registered only". In such a case the newly registered user is not asked for anything and the checkout process fails immediately with "You shopping cart is emty ..."message. It works corretly with flexible purchasing policy.

The weird thing is that setting the purchasing policy to "flexible" does not help for my real store. Also the shopping cart is displayed in a different way for an anonymous user - it dos not list items, but there is a link "View your cart" instead.

I do not know what is going on.

I just can't get the "Registered only" purchase policy running. It looks as if the newly registered user did not have an access to the personal contact form, but later he can make apurchase and check out successfully. I hava also tried to assign all possible permissions evento anonymous users with no help. I am really confused.

could anybody answer me?

I am simply unable to set up registered purchase policy. I tried to follow the simple instructions on www.drupalecommerce.org, but with no success.

I come accross it so early in the building of my site that other must have the same problem. Please,let mi know if you have an ecommerce site with functional "registered only" purchase policy.