Dan,

>Compilation Error
>Description: An error occurred during the compilation of a resource required
>to service this request. Please review the following specific error details
>and modify your source code appropriately.
>
>Compiler Error Message: CS0246: The type or namespace name 'AppWeb' could
>not be found (are you missing a using directive or an assembly reference?)

You should have an App.cs file in your site's App_Code folder. This file contains the AppWeb class.

Best Regards,