Tag Could not load file or assembly ‘System.Web.Helpers

[wp_ad_camp_1] I recently ran in to this error on an IIS 6 server using MVC 3 Razor. Check this first your exception: System.IO.FileNotFoundException: Could not load file or assembly ‘System.Web.Mvc, Version=1.0.0.0 It is trying to load MVC version 1. You…