I am in the process of upgrading to MVC4. I have followed the instructions at http://www.asp.net/whitepapers/mvc4-release-notes#_Toc303253806 but in my Razor views and layou
In the contracting world I'm often using machines that are using older images. After trying everything above I decided to update my VS 2013 to the most recent version (Update 4). After 90 minutes and a restart the references are working just fine now! Hope this helps!