System.ServiceModel.ServiceActivationException when adding MessageInspector

I am trying to apply messageinspector to authenticate my service requests , however , I am getting ServiceActivationException , I hope someone can tell me why . I am calling my services from jQuery ( everything is working fine but I just want to add the inspector ) .

this is my configuration class , and below the classes .

<system.serviceModel>    <behaviors>      <endpointBehaviors>        <behavior name="web">          <webHttp automaticFormatSelectionEnabled="true" />          <svcVerification />        </behavior>      </endpointBehaviors>    </behaviors>    <standardEndpoints>            <webHttpEndpoint>        <standardEndpoint  helpEnabled="true" automaticFormatSelectionEnabled="true"/>              </webHttpEndpoint>    </standardEndpoints>    <extensions>      <behaviorExtensions>        <add name="svcVerification" type="MySystem.WCFServicesAuthentication.MySystemServicesConfigurationSection, MySystem.WCFServicesAuthentication, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />      </behaviorExtensions>    </extensions>    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true">    </serviceHostingEnvironment>  </system.serviceModel>

this is the message inspector

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel.Dispatcher;

namespace MySystem.WCFServicesAuthentication
{
    public class MySystemServicesMessageInspector : IDispatchMessageInspector
    {

        public object AfterReceiveRequest(ref System.ServiceModel.Channels.Message request, System.ServiceModel.IClientChannel channel, System.ServiceModel.InstanceContext instanceContext)
        {
            return null;
        }

        public void BeforeSendReply(ref System.ServiceModel.Channels.Message reply, object correlationState)
        {
            
        }
    }

    
}

and this is the services behaviour

using System;

using System.Collections.Generic;

using System.Linq;using System.Text;

using System.ServiceModel.Description;

namespace MySystem.WCFServicesAuthentication

    public class MySystemServicesBehaviour : IEndpointBehavior

        public void AddBindingParameters(ServiceEndpoint endpoint, System.ServiceModel.Channels.BindingParameterCollection bindingParameters)

        throw new NotImplementedException();

        public void ApplyClientBehavior(ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.ClientRuntime clientRuntime)

            throw new NotImplementedException();

        public void ApplyDispatchBehavior(ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.EndpointDispatcher endpointDispatcher)

            MySystemServicesMessageInspector inspector = new MySystemServicesMessageInspector() ;

   endpointDispatcher.DispatchRuntime.MessageInspectors.Add(inspector);

    }        public void Validate(ServiceEndpoint endpoint)

           throw new NotImplementedException();

and this is the configuration class

using System;

using System.Collections.Generic;

using System.Linq;using System.Text;

using System.ServiceModel.Configuration;

using System.ServiceModel.Description;

namespace MySystem.WCFServicesAuthentication

    public class MySystemServicesConfigurationSection : BehaviorExtensionElement, IServiceBehavior

    public override Type BehaviorType

get

 return typeof(MySystemServicesBehaviour); }

      protected override object CreateBehavior()

   return new MySystemServicesBehaviour();

     public void AddBindingParameters(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase, System.Collections.ObjectModel.Collection<ServiceEndpoint> endpoints, System.ServiceModel.Channels.BindingParameterCollection bindingParameters)

      public void ApplyDispatchBehavior(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase)

     public void Validate(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase)

}}

}

and this is a sample of a service i have

 [OperationContract] [WebInvoke(ResponseFormat = WebMessageFormat.Json, Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, UriTemplate = "SubmitTicket")]

and this is how i call my service

$.ajax({ url: this.MySystemURL, dataType: this.MySystemDataType, type: this.MySystemType, processData: false, contentType: MySystemContentType, data: MySystemContentType == 'application/json' ? JSON.stringify(this.MySystemData) : this.MySystemData, success: function (returnedResult, statusText, jqXHR) { }

Re: System.ServiceModel.ServiceActivationException when adding MessageInspector

Could you post the call full call stack with the error?