title: How to fix "Object reference not set to an instance of an object" error in Orchard CMS
body: <p>I'm building an orchard CMS site. Initially, I downloaded the zipped version, but VS complained of the error: "Object reference not set to an instance of an object" in project Markdown.csproj, line 1. This made no sense to me, so I tried installing it from Web Platform installer. That worked great for a while. Then I restarted visual studio after some theme changes and got the original error again. I've attempted to revert the theme changes and tried relaunching VS in admin mode. Still no dice.</p>
  
  <p>I can find absolutely nothing on the subject of Markdown.csproj via google. If anyone has suggestions I'm all ears. Thanks.</p>