Invalid data entered Missing value for State / Province / Region #5203
We are using:
and keep getting the following error when checking out with Registration on the one page checkout.
Invalid data entered
Missing value for State / Province / Region
Behind the scenes it is accepting the new user even though the checkout fails and the page remains indicating the user was not created. The net effect is that if the customer then edits some fields and then re-submits the checkout there is a long processing delay. Then the checkout page works as if the customer has logged in, so you go to checkout however keeps coming up with a new error message "Invalid data entered".
Does anyone know whats going on and what we should do to repair?