Hi Daniel,

Which version of the Cart and DNN are you currently running?

Please confirm that you have the following 2 sql connection strings in your web config:

<connectionStrings>

<add name="SiteSqlServer" connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=dnn551cart;User ID=sa;Password=xxxx"/>

</connectionStrings>

<appSettings>

<add key="SiteSqlServer" value="Data Source=.\SQLEXPRESS;Initial Catalog=dnn551cart;User ID=sa;Password=xxxxxxxxx"/>

</appSettings>

Thanks,