I really do not know what to do, I\'m following this article that shows how to migrate my MVC 3 application manually .
I followed all the steps but
I assumed you have MVC3 Intranet web application, when upgrade from MVC3 to MVC4 using NuGet, your application now references System.Web.WebPages.Razor Version 2.0.0.0, NOT System.Web.WebPages.Razor Version 1.0.0.0 anymore. Here is my way of resolving the reference.
There are two places to fix:
In the root web.config,
. . .
. . .
change Version=1.0.0.0 to Version=2.0.0.0
So your new reference will look like this:
. . .
. . .
Hope it helps!