title: Test is failing with "Method not found" error
body: <p>I have configured BizTalk UnitTest Project to run on every check into TFS, but test run is failing with the below error:</p>
  
  <blockquote>
    <p>Method not found:
    'Microsoft.VisualStudio.TestTools.TestManagement.ControllerProxy
    Microsoft.VisualStudio.TestTools.TestManagement.Tmi.GetControllerProxy(Microsoft.VisualStudio.TestTools.Common.TestRunConfiguration,
    System.Object)'.</p>
  </blockquote>
  
  <p>Error details:</p>
  
  <pre><code>C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\MSTest.exe /nologo /usestderr /searchpathroot:"C:\Builds\29\BizTalk\&lt;proj&gt;\Binaries" /resultsfileroot:"C:\Builds\29\BizTalk\&lt;proj&gt;\TestResults" /testcontainer:"C:\Builds\29\BizTalk\&lt;proj&gt;\Sources\BizTalk\&lt;solution&gt;\C&lt;proj&gt;.UnitTest\bin\Release\&lt;proj&gt;.UnitTest.dll" /publish:"&lt;TFS path&gt;" /noprompt /publishbuild:"vstfs:///Build/Build/2592" /teamproject:"BizTalk" /platform:"Any CPU" /flavor:"Release" 
  Loading C:\Builds\29\BizTalk\&lt;proj&gt;\Sources\BizTalk\&lt;soln &gt;\&lt;proj&gt;.UnitTest\bin\Release\&lt;proj&gt;.UnitTest.dll...
  Starting execution...
  Microsoft (R) Test Execution Command Line Tool Version 12.0.21005.1
  Copyright (c) Microsoft Corporation. All rights reserved.
  For switch syntax, type "MSTest /help"
  **Method not found: 'Microsoft.VisualStudio.TestTools.TestManagement.ControllerProxy Microsoft.VisualStudio.TestTools.TestManagement.Tmi.GetControllerProxy(Microsoft.VisualStudio.TestTools.Common.TestRunConfiguration, System.Object)'.**
  </code></pre>