MSpec & Resharper test runner issue

I'm using MSpec and Visual Studio 2010 with Resharper 5.1. I've installed the MSpec test runner plugin into resharper but it's not working properly. Here's my test:

    public class when_I_click_create_investment_manager : with_main_window
    {
        Establish I_am_viewing_the_main_page = () => mainWindowViewModel = new MainWindowViewModel();
        Because the_user_clicks_create = () => mainWindowViewModel.CreateInvestmentManager.Execute(null);
        It should_show_the_investment_manager_details_screen = () => mainWindowViewModel.CurrentWorkspace.ShouldBeOfType(typeof(IInvestmentManagerDetailsViewModel));
        It should_set_the_edit_screen_to_create_mode = () => mainWindowViewModel.CurrentWorkspace.Mode.ShouldEqual(WorkspaceMode.New);  
    }

    public class with_main_window
    {
        protected static IMainWindowViewModel mainWindowViewModel;
    }

But the test runner doesn't run my asserts but still shows success, the output I get is:

Your issues are very likely caused by an outdated build of the MSpec plugin + assembly in your project directory. Please make sure you have the latest build of MSpec from CodeBetter CI both in the ReSharper plugin directory and your project.