Can't locate public query method

   Hi,
I have a view model using 2 differents models. I am using on single EntityManager (not one of the autogenerated by devforce with the model) to manage them.

To be able to call specific Query on the server I created a Named Query but when I try to call it from the client I get the following error :

Caught exception: System.Exception: Unable to locate public query method on 
server for: 'GetPatientsFromIPP' à 
IdeaBlade.EntityModel.Edm.UdtTransformVisitor.GetUdtQueryable(String 
entitySetName, Type returnEntityType, List`1 parameters) à 
IdeaBlade.EntityModel.Edm.UdtTransformVisitor.VisitConstant(ConstantExpression 
ce) à IdeaBlade.Linq.ExpressionVisitor.VisitExpressionCore(Expression e) à 
IdeaBlade.Linq.TransformExpressionVisitor.VisitExpressionCore(Expression expr) à 
IdeaBlade.Linq.ExpressionVisitor.VisitExpression(Expression expr) à 
IdeaBlade.Linq.ExpressionVisitor.Visit(Expression expr) à 
IdeaBlade.EntityModel.Edm.UdtTransformVisitor.Transform(EntityQuery query) à 
IdeaBlade.EntityModel.Server.EntityServer.Fetch(SessionBundle sessionBundle, 
IEntityQuerySurrogate surrogate) à SyncInvokeFetch(Object , Object[] , Object[] 
) à System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, 
Object[] inputs, Object[]& outputs) à 
System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& 
rpc) à 
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& 
rpc) à 
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc& 
rpc) à 
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& 
rpc) à 
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& 
rpc) à 
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& 
rpc) à 
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& 
rpc) à 
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& 
rpc) à 
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& 
rpc) à System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean 
isOperationContextSet)

I did exactly what it is said in the documentation (well I think).

My model assembly is correctly probed by the server :

Probe Assemblies: Test.Common.Domain, Version=1.0.0.0, Culture=neutral, 
PublicKeyToken=null :: Test.Patients.Server.Domain, Version=1.0.0.0, 
Culture=neutral, PublicKeyToken=null

In the model assembly (on the server) I added a class with my query definition

    [EnableClientAccess]
    public class PatientNamedQueryProvider
    {
        public IQueryable<Patient> GetPatientsFromIPP(string ipp)
        {
            return new EntityQuery<Patient>().Include("Personne").Where(p => p.IPP == ipp);
        }    }
In my Dataservices on the client here is my Code (I have a reference to the client model which doesn't know the PatientNamedQueryProvider Class)   :

        public void GetPatientsFromIPP(string ipp, Action<IEnumerable<Patient>> onSuccess, Action<Exception> onFail)
        {
            var qry = new EntityQuery<Patient>("GetPatientsFromIPP");
            qry.Parameters.Add(new EntityQueryParameter(ipp));

            Manager.ExecuteQueryAsync(qry, (op) =>
                                               {
                                                   if (op.CompletedSuccessfully)
                                                   {
                                                       if (null != onSuccess)
                                                       {
                                                           onSuccess(op.Results);
                                                       }
                                                       else
                                                       {
                                                           if (null != onFail)
                                                           {
                                                               op.MarkErrorAsHandled();
                                                               onFail(op.Error);
                                                           }
                                                       }
                                                   }
                                               });
        }

I first though I had an issue because of the parameters so I tried without and I get the same error.

What I am missing ? 

regards,