title: WiX GenerateBootrstraper no longer works after upgrading
body: <p>I had a solution with 2 projects in Visual Studio 2010 with .NET 4.
  One project is a shared library ("Widget") and the other is a WiX setup project ("Setup").
  WiX project was created for v3.6</p>
  
  <p>I upgraded the solution and the projects to Visual Studio 2012 and WiX 3.7 (still targeting .NET v4) but not my setup project fails to build due to bootstraper errors.</p>
  
  <p>In my project file I have following declared</p>
  
  <pre><code>&lt;!-- WiX Bootstrapper for installing prerequisites--&gt;
  &lt;ItemGroup&gt;
    &lt;BootstrapperFile Include=".NETFramework,Version=v4.0"&gt;
      &lt;ProductName&gt;.NET Framework 4.0&lt;/ProductName&gt;
    &lt;/BootstrapperFile&gt;
    &lt;BootstrapperFile Include="Microsoft.Windows.Installer.4.5"&gt;
      &lt;ProductName&gt;Windows Installer 4.5&lt;/ProductName&gt;
    &lt;/BootstrapperFile&gt;
  &lt;/ItemGroup&gt;  
  
  &lt;Target Name="AfterBuild"&gt;
    &lt;GenerateBootstrapper ApplicationFile="$(TargetFileName)"
                          ApplicationName="My Widget"
                          BootstrapperItems="@(BootstrapperFile)"
                          ComponentsLocation="Relative"
                          CopyComponents="True"
                          OutputPath="$(OutputPath)"
                          Path="C:\Program Files (x86)\Microsoft SDKs\Windows\v8.0A\Bootstrapper\"/&gt;    
  &lt;/Target&gt;
  </code></pre>
  
  <p>However when I build the setup project it fails with following (sorry for the verbosity, just wanted to be detailed)</p>
  
  <pre><code>7&gt;------ Rebuild All started: Project: My.Project.Setup, Configuration: Debug x86 ------
  7&gt;  C:\Program Files (x86)\WiX Toolset v3.7\bin\candle.exe -dDebug -d"DevEnvDir=C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\\" -dSolutionDir=X:\Source\My.Project\ -dSolutionExt=.sln -dSolutionFileName=My.Project.sln -dSolutionName=My.Project -dSolutionPath=X:\Source\My.Project\My.Project.sln -dConfiguration=Debug -dOutDir=bin\Debug\ -dPlatform=x86 -dProjectDir=X:\Source\My.Project\My.Project.Setup\ -dProjectExt=.wixproj -dProjectFileName=My.Project.Setup.wixproj -dProjectName=My.Project.Setup -dProjectPath=X:\Source\My.Project\My.Project.Setup\My.Project.Setup.wixproj -dTargetDir=X:\Source\My.Project\My.Project.Setup\bin\Debug\ -dTargetExt=.msi -dTargetFileName=My.Project.Setup.msi -dTargetName=My.Project.Setup -dTargetPath=X:\Source\My.Project\My.Project.Setup\bin\Debug\My.Project.Setup.msi -dMy.Project.Widget.Configuration=Debug -d"My.Project.Widget.FullConfiguration=Debug|x86" -dMy.Project.Widget.Platform=x86 -dMy.Project.Widget.ProjectDir=X:\Source\My.Project\My.Project.Widget\ -dMy.Project.Widget.ProjectExt=.csproj -dMy.Project.Widget.ProjectFileName=My.Project.Widget.csproj -dMy.Project.Widget.ProjectName=My.Project.Widget -dMy.Project.Widget.ProjectPath=X:\Source\My.Project\My.Project.Widget\My.Project.Widget.csproj -dMy.Project.Widget.TargetDir=X:\Source\My.Project\My.Project.Widget\bin\Debug\ -dMy.Project.Widget.TargetExt=.exe -dMy.Project.Widget.TargetFileName=My.Project.Widget.exe -dMy.Project.Widget.TargetName=My.Project.Widget -dMy.Project.Widget.TargetPath=X:\Source\My.Project\My.Project.Widget\bin\Debug\My.Project.Widget.exe -out obj\Debug\ -arch x86 -ext "C:\Program Files (x86)\WiX Toolset v3.7\bin\\WixUIExtension.dll" -ext "C:\Program Files (x86)\WiX Toolset v3.7\bin\\WixNetFxExtension.dll" Product.wxs
  7&gt;  C:\Program Files (x86)\WiX Toolset v3.7\bin\Light.exe -out X:\Source\My.Project\My.Project.Setup\bin\Debug\My.Project.Setup.msi -pdbout X:\Source\My.Project\My.Project.Setup\bin\Debug\My.Project.Setup.wixpdb -cultures:null -ext "C:\Program Files (x86)\WiX Toolset v3.7\bin\\WixUIExtension.dll" -ext "C:\Program Files (x86)\WiX Toolset v3.7\bin\\WixNetFxExtension.dll" -contentsfile obj\Debug\My.Project.Setup.wixproj.BindContentsFileListnull.txt -outputsfile obj\Debug\My.Project.Setup.wixproj.BindOutputsFileListnull.txt -builtoutputsfile obj\Debug\My.Project.Setup.wixproj.BindBuiltOutputsFileListnull.txt -wixprojectfile X:\Source\My.Project\My.Project.Setup\My.Project.Setup.wixproj obj\Debug\Product.wixobj
  7&gt;X:\Source\My.Project\My.Project.Setup\My.Project.Setup.wixproj(71,5): error MSB3152: To enable 'Download prerequisites from the same location as my application' in the Prerequisites dialog box, you must download file 'WindowsInstaller4_5\WindowsXP-KB942288-v3-x86.exe' for item 'Windows Installer 4.5' to your local machine. For more information, see http://go.microsoft.com/fwlink/?LinkId=239883.
  7&gt;X:\Source\My.Project\My.Project.Setup\My.Project.Setup.wixproj(71,5): error MSB3152: To enable 'Download prerequisites from the same location as my application' in the Prerequisites dialog box, you must download file 'WindowsInstaller4_5\WindowsXP-KB958655-v2-x86-ENU.exe' for item 'Windows Installer 4.5' to your local machine. For more information, see http://go.microsoft.com/fwlink/?LinkId=239883.
  7&gt;X:\Source\My.Project\My.Project.Setup\My.Project.Setup.wixproj(71,5): error MSB3152: To enable 'Download prerequisites from the same location as my application' in the Prerequisites dialog box, you must download file 'WindowsInstaller4_5\WindowsServer2003-KB942288-v4-x86.exe' for item 'Windows Installer 4.5' to your local machine. For more information, see http://go.microsoft.com/fwlink/?LinkId=239883.
  7&gt;X:\Source\My.Project\My.Project.Setup\My.Project.Setup.wixproj(71,5): error MSB3152: To enable 'Download prerequisites from the same location as my application' in the Prerequisites dialog box, you must download file 'WindowsInstaller4_5\WindowsServer2003-KB958655-v2-x86-ENU.exe' for item 'Windows Installer 4.5' to your local machine. For more information, see http://go.microsoft.com/fwlink/?LinkId=239883.
  7&gt;X:\Source\My.Project\My.Project.Setup\My.Project.Setup.wixproj(71,5): error MSB3152: To enable 'Download prerequisites from the same location as my application' in the Prerequisites dialog box, you must download file 'WindowsInstaller4_5\WindowsServer2003-KB942288-v4-x64.exe' for item 'Windows Installer 4.5' to your local machine. For more information, see http://go.microsoft.com/fwlink/?LinkId=239883.
  7&gt;X:\Source\My.Project\My.Project.Setup\My.Project.Setup.wixproj(71,5): error MSB3152: To enable 'Download prerequisites from the same location as my application' in the Prerequisites dialog box, you must download file 'WindowsInstaller4_5\WindowsServer2003.WindowsXP-KB958655-v2-x64-ENU.exe' for item 'Windows Installer 4.5' to your local machine. For more information, see http://go.microsoft.com/fwlink/?LinkId=239883.
  7&gt;X:\Source\My.Project\My.Project.Setup\My.Project.Setup.wixproj(71,5): error MSB3152: To enable 'Download prerequisites from the same location as my application' in the Prerequisites dialog box, you must download file 'WindowsInstaller4_5\Windows6.0-KB958655-v2-x86.MSU' for item 'Windows Installer 4.5' to your local machine. For more information, see http://go.microsoft.com/fwlink/?LinkId=239883.
  ========== Rebuild All: 6 succeeded, 1 failed, 0 skipped ==========
  </code></pre>
  
  <p>Any ideas?
  The Packages location is valid, I verified its existence....</p>