Trying to run sample code from ASP.NET tutorials in place, but Website Config tool doesn't work

Hello all.


I'm working my way through the ASP.NET Security Tutorials, which can be found here:


http://www.asp.net/%28S%28pdfrohu0ajmwt445fanvj2r3%29%29/learn/security/


With not too much trouble, I'd been able to work my way almost through #6, to the point where I had successfully pointed my application at a SQL Server instance and schema of my choosing, and was able to add users and roles through the Website Administration tool.   I was also able to create users through the website, and would then be able to confirm the new users either by looking at the database table directly, or by viewing them through the ASP.NET Website Admin tool.
I've done this by following the directions and building everything from scratch, but somewhere near the end of lesson #6, I messed something up.   I'd like to go back over the steps from the beginning of lesson #5, so I have downloaded the sample code f ...