title: Compilation issue in Visual Studio 12 Professional with a C# project
body: <p>The project worked fine in Visual Studio 2010, and we upgraded to Visual Studio 2012; however, now it does not compile.</p>
  
  <p>We get the following error:</p>
  
  <blockquote>
    <p>Error 2   Task could not find "AL.exe" using the SdkToolsPath "" or the registry key "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v8.0A\WinSDK-NetFx40Tools-x86". Make sure the SdkToolsPath is set and the tool exists in the correct processor specific location under the SdkToolsPath and that the Microsoft Windows SDK is installed    PROJECT_NAME</p>
  </blockquote>
  
  <p>Does anyone how to solve this issue?</p>
  
  <p>I am on Windows 2008 R2 SP1 with .NET 4.5 installed. I did not install .NET 4 directly, I used the .NET 4.5 installer.</p>