title: Changed or Corrupt msi
body: <p>I am new to wix so please bear with me.</p>
  
  <p>I have a working installer for our WPF Windows application. I am now trying to make a prerequisite application install before my application installs. I am able build the installer packaged with the prerequisite for my application but when I run it and click "yes" to if I want to run the install for my prerequisite program it throws and error.</p>
  
  <p>Setup has detected that the file 'C:\Users\DevMachine\AppData\Local\Temp\VSDC06D.tmp\SlimDX\SlimDX Runtime .NET 4.0 x64 (January 2012).msi' has either changed since it was initially published or may be corrupt.</p>
  
  <p>I know the slimDx msi is not corrupt as I can run it from my installer directory just fine. So maybe it thinks it has changed. </p>
  
  <p>I use code signing with a .snk key on all the projects in my application, could this somehow be the cause? I am at a loss on how to fix it if this is the problem.</p>
  
  <p>I copy the redistributable slimDx package to the Setup folder in the msbuild part.</p>
  
  <pre><code>  &lt;ItemGroup&gt;
      &lt;BootstrapperFile Include=".NETFramework,Version=v4.0"&gt;
        &lt;ProductName&gt;Microsoft .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;BootstrapperFile Include="ESRIArcEngine$(EsriVersionLinked)Runtime"&gt;
        &lt;ProductName&gt;ESRIArcEngine$(EsriVersionLinked)Runtime&lt;/ProductName&gt;
      &lt;/BootstrapperFile&gt;
      &lt;BootstrapperFile Include="SlimDX.January.2012"&gt;
        &lt;ProductName&gt;SlimDX (January 2012)&lt;/ProductName&gt;
      &lt;/BootstrapperFile&gt;
    &lt;/ItemGroup&gt;
  </code></pre>
  
  <p>So in the end I am trying to make it when I launch my applications Setup.exe it will first run the installer for SlimDx redistributable and then run the install for my application. </p>
  
  <p>Please help, thank you.</p>