This error appears after updating ASP.NET Web Helpers Library today to version 2.0 which was apparently released today. I updated by mistake, however would like to resolve t
You may refer to this question to get help
Could not determine which version of ASP.NET Web Pages to use
or you may read the instructions in the page
http://www.asp.net/mvc/overview/releases/how-to-upgrade-an-aspnet-mvc-4-and-web-api-project-to-aspnet-mvc-5-and-web-api-2