DynamicProxy as a Service is not found at runtime - wcf

Question

I'm trying to develop a WCF Service to be used as a Proxy of an already defined Web Service from a Provider.
Here is the steps that i followed to acomplish this goal:
Create a WCF Service Application
Added a Service reference to the Provider Web Service
Added Global.asax to the project.
Added Castle.Core (v3.2) reference via NuGet to the project.
Added some code to the Global.asax
Here is the code in my Global.asax
/// <summary>
/// Contiene eventos globales ejecutados
/// </summary>
public class Global : HttpApplication
{
private static readonly ProxyGenerator generator = new ProxyGenerator();
private static List<object> proxies = new List<object>();
/// <summary>
/// Evento que se ejecuta cuando se inicializa la aplicacion
/// </summary>
/// <param name="sender">Objeto que origna el evento</param>
/// <param name="e">Argumentos del evento</param>
protected void Application_Start(object sender, EventArgs e)
{
ConfigurarServicios();
}
/// <summary>
/// Busca los servicios registrados en el proyecto
/// </summary>
/// <returns>Coleccion de servicios registrados y que extienden
/// la clase ServiceBase</returns>
private static IEnumerable<Type> BuscarServicios()
{
ConfigurarProxies();
var list = new List<Type>();
foreach (var proxy in proxies)
{
list.Add(proxy.GetType());
}
return list;
}
/// <summary>
/// Configura los servicios del proyecto para ser accedidos
/// a traves de REST y SOAP
/// </summary>
private static void ConfigurarServicios()
{
var soapFactory = new ServiceHostFactory();
var services = BuscarServicios();
foreach (var serviceType in services)
{
string serviceName = "xm";
var soapEndpoint = new ServiceRoute("Servicios/" + serviceName, soapFactory, serviceType);
RouteTable.Routes.Add("Servicios/" + serviceName,soapEndpoint);
}
}
private static void ConfigurarProxies()
{
var interceptor = new Interceptor();
var proxy1 = generator.CreateInterfaceProxyWithoutTarget(typeof(ExternalServices.XpressMoney.XMSendTxnServicePortType), interceptor);
proxies.Add(proxy1);
}
}
When I run the project, everything just work fine, but when I try to access to the ServiceRoute /Servicios/xm, it shows me the next error:
The type 'Castle.Proxies.XMSendTxnServicePortTypeProxy, DynamicProxyGenAssembly2, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null', provided as the Service attribute value in the ServiceHost directive, or provided in the configuration element system.serviceModel/serviceHostingEnvironment/serviceActivations could not be found.
And this is the stack:
[InvalidOperationException: The type 'Castle.Proxies.XMSendTxnServicePortTypeProxy, DynamicProxyGenAssembly2, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null', provided a the Service attribute value in the ServiceHost directive, or provided in the configuration element system.serviceModel/serviceHostingEnvironment/serviceActivations could not be found.]
System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(String constructorString, Uri[] baseAddresses) +59318
System.ServiceModel.HostingManager.CreateService(String normalizedVirtualPath, EventTraceActivity eventTraceActivity) +1434
System.ServiceModel.HostingManager.ActivateService(ServiceActivationInfo serviceActivationInfo, EventTraceActivity eventTraceActivity) +52
System.ServiceModel.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath, EventTraceActivity eventTraceActivity) +598
[ServiceActivationException: The service '/Servicios/xm' cannot be activated due to an exception during compilation. The exception message is: The type 'Castle.Proxies.XMSendTxnServicePortTypeProxy, DynamicProxyGenAssembly2, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null', provided as the Service attribute value in the ServiceHost directive, or provided in the configuration element system.serviceModel/serviceHostingEnvironment/serviceActivations could not be found..]
System.Runtime.AsyncResult.End(IAsyncResult result) +499812
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +178
System.ServiceModel.Activation.AspNetRouteServiceHttpHandler.EndProcessRequest(IAsyncResult result) +6
System.Web.CallHandlerExecutionStep.OnAsyncHandlerCompletion(IAsyncResult ar) +129
I guess that the problem occurs when the .NET Framework try to dynamically instantiate the DynamicProxy, but I really don't know. Maybe the Next Lines is a clue:
var soapEndpoint = new ServiceRoute("Servicios/" + serviceName, soapFactory, serviceType);
RouteTable.Routes.Add("Servicios/" + serviceName,soapEndpoint);
Hope you can help me.