title: MSTest does not execute unit tests
body: <p>When I try to run my unit tests, either in the Visual Studio 2010 IDE or from the commands line (via <code>mstest /testcontainer:my.dll</code>), I get this error:</p>
  
  <blockquote>
    <p>Failed to queue test run 'kootsookosp@TFSSERVER 2011-06-28 11:00:11': Method not found: 'Void Microsoft.VisualStudio.TestTools.Agent
    .AgentProcessManager.SetCurrentPlatform(System.Reflection.ProcessorArchitecture, Microsoft.VisualStudio.TestTools.Common.AssemblyClr
    Version)'.</p>
  </blockquote>
  
  <p><a href="https://stackoverflow.com/questions/525578/why-are-all-my-visual-studio-test-results-not-executed">Most other posts</a> regarding <code>mstest</code> errors suggest an issue with security, but this seems different.</p>
  
  <p>Googling the above error message doesn't appear to show anything much that seems relevant.</p>