WCF Service with SSL and Custom Authentication

Question

So I am trying to create a WCF Service that uses SSL and with a Custom Authenticator.

This is the Server config:

<?xml version="1.0"?>


<configuration>

  <appSettings>
    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
  </appSettings>
  <system.web>
    <compilation debug="true" strict="false" explicit="true" targetFramework="4.5.2" />
    <httpRuntime targetFramework="4.5.2"/>
  </system.web>
  <system.serviceModel>

    <bindings>
      <wsHttpBinding>
        <binding name="SSL">
          <security mode="TransportWithMessageCredential">
            <message clientCredentialType="UserName"/>
          </security>
        </binding>
      </wsHttpBinding>
    </bindings>

    <services>
      <service behaviorConfiguration="CustomValidation" name="WCFService.Service1">
        <endpoint address="" binding="wsHttpBinding" contract="WCFService.IService1" bindingConfiguration="SSL"/>
        <endpoint address="mex" binding="mexHttpsBinding" contract="IMetadataExchange"/>
      </service>
    </services>

    <behaviors>
      <serviceBehaviors>
        <behavior name="CustomValidation">
          <serviceMetadata httpsGetEnabled="true" />
          <serviceDebug httpsHelpPageEnabled="true" includeExceptionDetailInFaults="true" />
          <serviceCredentials>
            <userNameAuthentication userNamePasswordValidationMode="Custom" customUserNamePasswordValidatorType="WCFService.Verification, WCFService" />
          </serviceCredentials>
        </behavior>
      </serviceBehaviors>
    </behaviors>  

    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="false" />
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
    <!--
        To browse web app root directory during debugging, set the value below to true.
        Set to false before deployment to avoid disclosing web app folder information.
      -->
    <directoryBrowse enabled="false"/>
  </system.webServer>

</configuration>

This is my Validation Class:

Imports System.IdentityModel.Selectors

Public Class Verification
    Inherits UserNamePasswordValidator

    Public Overrides Sub Validate(userName As String, password As String)

        If Not (username = "Admin" AndAlso password = "Fake Password") Then
            Throw New Exception("Wrong Username Password combination.")
        End If

    End Sub

End Class

App Config:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <system.diagnostics>
        <sources>
            <source name="System.ServiceModel.MessageLogging" switchValue="Warning,ActivityTracing">
                <listeners>
                    <add type="System.Diagnostics.DefaultTraceListener" name="Default">
                        <filter type="" />
                    </add>
                    <add name="ServiceModelMessageLoggingListener">
                        <filter type="" />
                    </add>
                </listeners>
            </source>
        </sources>
        <sharedListeners>
            <add initializeData="c:\users\connor smith\documents\visual studio 2015\projects\wcfserviceconsumer\wcfserviceconsumer\app_messages.svclog"
                type="System.Diagnostics.XmlWriterTraceListener, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
                name="ServiceModelMessageLoggingListener" traceOutputOptions="Timestamp">
                <filter type="" />
            </add>
        </sharedListeners>
        <trace autoflush="true" />
    </system.diagnostics>
    <startup>
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
    </startup>
    <system.serviceModel>
        <diagnostics>
            <messageLogging logEntireMessage="true" logMalformedMessages="true"
                logMessagesAtTransportLevel="true" />
        </diagnostics>
        <bindings>
            <wsHttpBinding>
                <binding name="WSHttpBinding_IService1">
                    <security mode="TransportWithMessageCredential">
                        <transport clientCredentialType="None" />
                        <message clientCredentialType="UserName" />
                    </security>
                </binding>
            </wsHttpBinding>
        </bindings>
        <client>
            <endpoint address="https://mysite.co.uk/WCFService/Service1.svc"
                binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IService1"
                contract="AService.IService1" name="WSHttpBinding_IService1" />
        </client>
    </system.serviceModel>
</configuration>

I consume it in a test application, then I set the Username and Password to be Admin and Fake Password, then I go to use the service and get the following error: Error

Edit: Some more error information:

'An unhandled exception of type 'System.ServiceModel.ProtocolException' occurred in mscorlib.dll'

Am I missing something?