Installing ASP.NET MVC 4 Beta breaks ASP.NET MVC 3 RTM applications
We where just bitten by this one and the problem was not immediately obvious. You will see some error like The name ‘model’ does not exist in the current context or ‘System.Web.WebPages.Html.HtmlHelper’ does not contain a definition for ‘ActionLink’ and no extension method ‘ActionLink’ accepting a first argument of type ‘System.Web.WebPages.Html.HtmlHelper’ could be found (are you missing a using directive or an assembly reference?) Additionally when you check the IntelliSense of @Html you will not see some of the extension methods like Action() or ActionLink() Fixing it is not hard one you know the problem. Include the … Continue reading Installing ASP.NET MVC 4 Beta breaks ASP.NET MVC 3 RTM applications