WCF problem in Unity

Hello, we are trying to use IPC 's to connect our game logic with Unity (using unity as nothing but a rendering engine). So far we're only proofing the concept but we've hit an error.

We get this exception from Unity:

InvalidOperationException: Channel type IDuplexSessionChannel is not supported.

 public class NewBehaviourScript : MonoBehaviour 
 {
     DataWriter _writer;

     void Start () 
     {
         _writer = new DataWriter(); //EXCEPTION THROWN HERE
     }
 
     // Update is called once per frame
     void Update () 
     {
         int[] ent = reader.Reader.GetNewEntities();
     }
 }    

We have a c# library that we've tried compiling both in VS2012 (with .net 3.5 and 4.5) as well as in mono (the same distribrution as Unity uses):

 public class DataWriter
 {
     ChannelFactory<IDataWriter> _pipeFactory;
     IDataWriter _pipeProxy;

     public DataWriter()
     {
         _pipeFactory =
             new ChannelFactory<IDataWriter>(
                 new NetNamedPipeBinding(),
                 new EndpointAddress("net.pipe://localhost/PipeDataWriter"));

         _pipeProxy = _pipeFactory.CreateChannel();
     }

     public IDataWriter Writer
     {
         get
         {
             return _pipeProxy;
         }
     }
 }

When running code that does the same thing (creates a new DataWriter) from VS2012, we don't get the exception at all. Is there a workaround to this and/or is there another way to achieve essentially the same thing. What we want is a simple database holding that a game logic client writes to and that we can read from in Unity.