C# - WCF Service Not Returning Value To JQuery

I have a problem with getting jquery to retrieve results from a WCF service. I am hosting the WCF service within IIS and when I attach the debugger to this process I can see that the code is processed successfully. However, when it hits the callback within jquery there is no data??

I have set up a trace on the wcf service and there are no errors. It just seems as though the data is lost after the wcf service method completes.

Here is the jquery code which calls the service:

$.get("http://ecopssvc:6970/ecopsService.svc/Echo", {echoThis: "please work"}, function(data) {
alert("Data Loaded: " + data);
});

Here is the wcf config:

<system.serviceModel>
<services>
<service name="EcopsWebServices.EcopsService" behaviorConfiguration="EcopsServiceBehaviours">
<endpoint address="" behaviorConfiguration="WebBehaviour"
binding="webHttpBinding" bindingConfiguration="" contract="EcopsWebServices.IEcopsServiceContract" />
</service>
</services>
<behaviors>
<endpointBehaviors>
<behavior name="WebBehaviour">
<webHttp />
<enableWebScript />
</behavior>
</endpointBehaviors>
<serviceBehaviors>
<behavior name="EcopsServiceBehaviours">
<serviceMetadata httpGetEnabled="true" httpGetUrl=""/>
<serviceDebug includeExceptionDetailInFaults="true"/>
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>

Here is the service contract:

[ServiceContract]
public interface IEcopsServiceContract
{
[WebGet]
[OperationContract]
string Echo(string echoThis);
}

Here is the Service implementation:

[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class EcopsService : IEcopsServiceContract
{
#region IEcopsServiceContract Members
public string Echo(string echoThis)
{
return string.Format("You sent this '{0}'.", echoThis);
}
#endregion
}