What version of Visual Studio was this created in?

Aug 24, 2010 at 9:34 PM

I have downloaded the source code.  When I try to open the solution in VS2008 I get the following error:  "The project file 'D:\Visual Studio 2008\Projects\Dullroar.SharePoint.PopularPages\Dullroar.Sharepoing.PopularPages\Dullroar.Sharepoint.PopularPages.csproj' cannot be opened.  The project type is not supported by this installation."

Has anyone else run into this?  If so, how did you work around it?