asp.net-web-admin-tool

ASP.NET Web Site Administration Tool unkown Error ASP.NET 4 VS 2010

I was following the MVCMusic tutorial with an machine with full sql server 2008 r2 and full visual studio professional, in ASP.NET 4.0 and when I got to the page where it sets up membership (near page 66) the Web administration tool wont work, i got the following error: An error was encountered. Please return to the previous page and tr...