"You must add a reference to assembly 'System.Data.Services.Client, Version=3.5.0.0'"

Answer 1

I added the following to my web.config file and all is copacetic.

<system.web>
  <compilation debug="true" targetFramework="4.0">
    <assemblies>
      <add assembly="System.Data.Services.Client, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
    </assemblies>
  </compilation>
</system.web>