Please Select Shipping Address!

[yaani]

I am using Virtuemart on this website www.barkersexhaust. com (remove space)

I have some kind of bug in the check out processs. I click Checkout & it keeps telling "Please select shipping address!" The " - Default (Same as Billing)" radio button is already selected. I can't get past this error message. Can anyone give me any help with this?

Thanks!