title: VS2012 doesn't run: Could not load file or assembly 'PresentationCore' v4.0.0.0 or one of its dependencies
body: <p>I've a problem when I start Visual Studio 2012. It show s an error saying:</p>
  <blockquote>
  <p>Microsoft Visual Studio</p>
  <p>Could not load file or assembly '<code>PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35</code>' or one of its dependencies. The module was expected to contain an assembly manifest.</p>
  <p>OK</p>
  </blockquote>
  <p>I've re-installed it, but the error remains.</p>