title: Processor architecture mismatch between projects when building C# MVC 5 site
body: <p>The error I'm getting is as below...</p>
  
  <blockquote>
    <p>build 20-Apr-2017
    13:23:38  C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(1605,5):
    warning MSB3270: There was a mismatch between the processor
    architecture of the project being built "MSIL" and the processor
    architecture of the reference "System.Data", "AMD64". This mismatch
    may cause runtime failures. Please consider changing the targeted
    processor architecture of your project through the Configuration
    Manager so as to align the processor architectures between your
    project and references, or take a dependency on references with a
    processor architecture that matches the targeted processor
    architecture of your project.
    [D:_atlassian-home\bamboo-home\xml-data\build-dir\blah\blah\blah.csproj]</p>
  </blockquote>
  
  <p>I've seen other people have the same issue, but after following their solutions, it did not improve my situation (<a href="https://stackoverflow.com/questions/32824080/processor-architecture-mismatch-building-error">Processor architecture mismatch building error</a>).</p>
  
  <p>This is happening on our CI server (Bamboo) when running MSBuild on the solution.</p>
  
  <p>I'm quite stumped, does anyone have any ideas?</p>