title: ASP.NET Warning - CS1701: Assuming assembly reference
body: <p>Recently we've started upgrading all our projects to MVC5.  I've done 4 other projects without issue but for some reason this one is throwing 95 warnings.</p>
  
  <pre><code>ASPNETCOMPILER : warning CS1701: Assuming assembly reference 'System.Web.Mvc,
  Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' matches 'Sy
  stem.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
  ', you may need to supply runtime policy
  </code></pre>
  
  <p>Now I am completely aware of what this warning normally means.  I have looked EVERYWHERE for an incorrect reference, checked every single dependency, even gone so far as to grep every single file in my project folder.  I feel like I've wasted days on this and its driving me bonkers!</p>
  
  <p>Does anyone have any suggestions on debugging this issue?</p>