title: Project <Name> could not be opened because the Microsoft Visual C# 2010 compiler could not be created. Please re-install Visual Studio
body: <p>After installing <a href="http://msdn.microsoft.com/en-us/devlabs/hh227299" rel="nofollow noreferrer">Debugger Canvas</a> and restarting Visual Studio, I get this error for each project when opening a solution:</p>
  
  <blockquote>
    <p>Project &lt;Name&gt; could not be opened because the Microsoft Visual C#
    2010 compiler could not be created. Please re-install Visual Studio.</p>
  </blockquote>
  
  <p>I tried all of the answers from this question with no luck: <a href="https://stackoverflow.com/questions/769071/microsoft-visual-c-2008-compiler-could-not-be-created-please-re-install-visual">Microsoft visual C# 2008 compiler could not be created. Please re-install Visual Studio</a></p>
  
  <p>So far I have:</p>
  
  <ul>
  <li>Tried the /resetsettings argument</li>
  <li>Tried the /ResetSkipPkgs argument</li>
  <li>Tried removing the whole key: <code>HKEY_CURRENT_USER\Software\Microsoft\VisualStudio</code></li>
  </ul>
  
  <p>Any other ideas other than reinstalling VS and/or SP1?</p>
  
  <p>VS Version: 10.0.40219.1 SP1Rel</p>
  
  <p>Thanks!</p>