title: Sandcastle Error BE0073 .NET Framework 4.5
body: <p>I am trying to generate help files using Sandcastle, locally this works find but on my build server I keep receiving the same error message:</p>
  
  <pre><code>SHFB: Error BE0073: A project with a different or higher framework version was 
  found but that version (.NETFramework 4.5) or a suitable redirected version 
  was not found 
  </code></pre>
  
  <p>I have checked and I have .NET 4.5.1 installed and 4.5, my projects build without an issue on the server. It is only Sandcastle that is causing a problem.</p>
  
  <p>Does anyone know the cause of this error or how I can diagnose it further?</p>