title: Autofac.Webapi failing at runtime on application start
body: <p>I am trying to use Autofac.WebApi with an ASP.NET MVC4 WebApi project. I installed the latest Autofac and Autofac.WebApi using Nuget, but at runtime on application start when trying to register the GlobalConfiguration DependencyResolver, I get this exception thrown:</p>
  
  <blockquote>
    <p>Could not load file or assembly 'Autofac, Version=2.6.2.859,
    Culture=neutral, PublicKeyToken=17863af14b0044da' or one of its
    dependencies. The located assembly's manifest definition does not
    match the assembly reference. (Exception from HRESULT: 0x80131040)</p>
  </blockquote>