System.Web.Optimization and Microsoft.Web.Optimization won't load reference in vs 2012

Question

I\'m working on an MVC 4 project started in Visual Studio 2010. Right now I\'m working on a machine with Visual Studio 2012 as I don\'t have access to the machine I was original

Answer 1

What worked for me in a specific scenario (I downloaded a MVC project from source control and received that error), was to open a new MVC project on the same solution. Afterwards I could delete the new project I've created and it still works (on VS2012).