System.Web.Mvc misplaced on modern systems

When you clone this repo (say in 2016 or beyond) and you perhaps don't have System.Web.Mvc 3.0 version in the location the solution expects you to, simply go to the project's references, delete System.Web.Mvc and re-add it based on the location of System.Web.Mvc v3.0 on your local system.

All build errors will cease to exist and you will be able to successfully build the solution.