title: Mono can't load ServiceStack.Interfaces.dll
body: <p>Using Mono on OS X (MDK 3.2.3) and NuGet installed according to <a href="https://monomvc.wordpress.com/2012/03/06/nuget-on-mono/" rel="nofollow">MonoMVC's instructions</a>, I've tried to follow <a href="https://github.com/ServiceStack/ServiceStack/wiki/Create-your-first-webservice" rel="nofollow">the "your first webservice" tutorial in ServiceStack's documentation</a>. This tutorial assumes IIS and Visual Studio, neither of which exist in my environment, and after several hours of searching for solutions on the internet I've done the following extra steps which they don't mention:</p>
  
  <ul>
  <li>Wrap the <code>web.config</code> example in a <code>&lt;configuration&gt;</code> tag.</li>
  <li>Put the source code for the Hello classes in a folder called <code>App_Code</code></li>
  <li><p>Copied all of the <code>.dll</code> files that NuGet downloaded into a folder called <code>bin</code> with</p>
  
  <p><code>find . -iname '*.dll' -exec cp {} bin \;</code></p></li>
  <li>Use <code>xsp4</code> from the root folder of my project to host a development server.</li>
  <li>Copy <code>System.Core.dll</code> from <code>lib/mono/4.5</code> to my project's <code>bin</code> folder.</li>
  </ul>
  
  <p>When I try to visit <code>localhost:8080</code>, I now get this error message:</p>
  
  <blockquote>
    <p><strong>System.Web.Compilation.CompilationException</strong><br/> CS1684: Reference to type <code>ServiceStack.ServiceHost.IResolver</code> claims it is defined
    assembly <code>ServiceStack.Interfaces, Version=3.9.60.0, Culture=neutral,
    PublicKeyToken=null</code>, but it could not be found</p>
  </blockquote>
  
  <p>How do I resolve this error?</p>
  
  <hr>
  
  <p><strong>Edit:</strong> Removed references to the <em>Missing method .ctor</em> errors, as they're unrelated to the CompilationException above. They go away if I copy <em>System.Core.dll</em> from <code>lib/mono/4.5</code> to the <code>bin</code> folder, but the CompilationException remains. </p>