Windows Azure Trace Log not working

I'm sure I have missed something simple but I can't get simple Trace.WriteLine to work on Azure.

Steps I have taken:

Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString has been set up to our Azure storage account

Import Module Diagnostics to service definition file.

Web config:

  <system.diagnostics>
    <switches>
      <add name="logLevel" value="4" />
    </switches>
    <trace autoflush="false" indentsize="4">
      <listeners>
        <add type="Microsoft.WindowsAzure.Diagnostics.DiagnosticMonitorTraceListener, Microsoft.WindowsAzure.Diagnostics, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
          name="AzureDiagnostics">
        </add>
      </listeners>
    </trace>

  </system.diagnostics>

WebRole.cs

public class WebRole : RoleEntryPoint
{
    public override bool OnStart()
    {


        String wadConnectionString = "Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString";

        CloudStorageAccount cloudStorageAccount = CloudStorageAccount.Parse(RoleEnvironment.GetConfigurationSettingValue(wadConnectionString));

        RoleInstanceDiagnosticManager roleInstanceDiagnosticManager =
                cloudStorageAccount.CreateRoleInstanceDiagnosticManager(
                RoleEnvironment.DeploymentId,
                RoleEnvironment.CurrentRoleInstance.Role.Name,
                RoleEnvironment.CurrentRoleInstance.Id);

        DiagnosticMonitorConfiguration diagnosticMonitorConfiguration =
            roleInstanceDiagnosticManager.GetCurrentConfiguration();

        diagnosticMonitorConfiguration.Directories.ScheduledTransferPeriod =
               TimeSpan.FromMinutes(5d);

        diagnosticMonitorConfiguration.Logs.ScheduledTransferPeriod =
               TimeSpan.FromMinutes(1d);

        diagnosticMonitorConfiguration.Logs.ScheduledTransferLogLevelFilter = LogLevel.Verbose;

        roleInstanceDiagnosticManager.SetCurrentConfiguration
              (diagnosticMonitorConfiguration);

        Trace.WriteLine("This is the message");
        Debug.Write("This is the debug message");
        System.Diagnostics.Trace.TraceError("message2");
        System.Diagnostics.Trace.TraceWarning("message warning");
        System.Diagnostics.Trace.TraceInformation("message warning");
        Trace.Flush();
        return base.OnStart();

    }
}

Solution is compiled as release.

When I view the objects in the storage account I can see a Table called WADDirectoriesTable and three blobs created called vsdeploy, wad-control-container and was-iis-logfiles.

Nothing that looks like my Trace information.

Many thanks