Hi,

I'm having the same problem, but it has nothing to do with the cart.

I have a teststore that nobody is using but me. I've added 3 attributes--two dropdowns and 1 radio buttons.

The two dropdown defaults are working fine.

The radio buttons have no default.

I have nothing in the cart. I tried Jeff's fix from the previous post and it did not fix it.

I'm on 1.3.8a. I'm using the add on improved_attributes_controller_1-1b2
but that's not the problem because I just changed back to the original attributes controller and same problem.

When I change that attribute to dropdown or checkboxes, it works fine. But for some reason radio buttons does not show me a default.

Hmm....