Tips & Tricks: Upgrading Projects from ASP.NET MVC Preview 1 to Preview 2 (MIX 2008)
If you previously had ASP.NET MVC Preview 1 (CTP 1) and had already created a few projects on it then you might have to take this additional step to convert your project to ASP.NET MVC Preview 2 (MIX 2008) [After installing MVC Preview 2 ( Resources here )]. In ASP.NET MVC Preview 2 we introduced a special MVC Project flavor GUID for MVC Projects. Some of the special MVC project behaviors described in my previous post " Tooling Features Overview " may not function as expected e.g. new 'MVC' node under the 'Web' node for 'Add new Items Dialog Box' may not show... To make the project features to function as expected in Preview 2, open the MVC project file (.csproj/.vbproj) of the project
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Read the complete post at http://blogs.msdn.com/webdevtools/archive/2008/03/12/tips-tricks-upgrading-projects-from-asp-net-mvc-preview-1-to-preview-2-mix-2008.aspx