There must be another problem with the files. It would work if the globals and form are filled out correctly and no other changes to the page were made.
Maybe you have the global for shipping in general set to false?
$WAGLOBAL_Shipping_Enabled = false; //set to true if you intend to use shipping rate lookup.
Where does it say your cc is incorrect? Is that the validation message or is that on the checkout_failure page? I would not suggest regenerating anything until you understand the problem better.
Did this help? Tips are appreciated...
