Do you get through to the success page? What we did couldn't have broken the store cart in database, but you were going to go and add the columns to the database and server behavior, maybe something got applied wrong in your updates after the call.
Simply installing and uninstalling Dreamweaver versions wouldn't effect the pages.
When you go to checkout does the checkout work and take you to the success page just the orders and order details tables in the database aren't updated?