It would appear that you don't have any shipping options enabled- have you checked your settings for the shipping options you are offering? Have them turned ON? Have the settings for each type of shipping set correctly? If you have made no coding changes, it's a settings problem.
Here's the doc section for the shipping extension that come with the default install.
http://docs.abantecart.com/pages/ship_and_pay/enable_shipping.htmlYou request some detailed help, but you didn't provide enough detail for that to happen. But please double check all your settings for your desired shipping extension(s) and see if that doesn't solve your problem.