title: Windows Azure and WCF Data Services V3
body: <p>My question is:<br/>
  why does <code>WCF Data Services 5.2.0</code> work under Azure Emulator and not under Azure Staging/Production environment?</p>
  
  <p>I get this error on server:</p>
  
  <blockquote>
    <p>Could not load file or assembly Microsoft.Data.Services, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) </p>
  </blockquote>
  
  <p>instead on emulator it works perfectly..</p>
  
  <p>My project reference assemblies are:</p>
  
  <ul>
  <li>Microsoft.Data.Services 5.2.0.0</li>
  <li>Microsoft.Data.Services.Client 5.2.0.0</li>
  <li>Microsoft.Data.OData 5.2.0.0</li>
  <li>Microsoft.Data.Edm 5.2.0.0</li>
  <li>System.Spatial 5.2.0.0</li>
  <li>Microsoft.WindowsAzure.Storage 2.0.0.0</li>
  </ul>
  
  <p>V3 is very useful to show data in JSON without other libraries.</p>