ServiceStack authentication with MVC Controllers

I've followed the samples in SocialBootstrapAPi for ServiceStack but I don't get it how the redirects are wired up. When I go to the Secured controller being unauthenticated I get redirected back to the index page. I was unable to replicate the behaviour in my own application. Did not find where this wirings are done - can't find them in SocialBootstrapApi's web.config? I've inherited from the `ServiceStackController<AuthUserSession>` and put `[Authenticate]` on my base controller. This is the error I get: ``` [NullReferenceException: Object reference not set to an instance of an object.] ServiceStack.ServiceInterface.SessionExtensions.SessionAs(ICacheClient cache, IHttpRequest httpReq, IHttpResponse httpRes) +90 ServiceStack.Mvc.ServiceStackController.SessionAs() +64 ServiceStack.Mvc.ServiceStackController`1.get_UserSession() +36 ServiceStack.Mvc.ServiceStackController`1.get_AuthSession() +5 ServiceStack.Mvc.ExecuteServiceStackFiltersAttribute.OnActionExecuting(ActionExecutingContext filterContext) +97 ``` This is what I have in the AppHost.cs file: ``` //Enable Authentication ConfigureAuth(container); //Register In-Memory Cache provider. //For Distributed Cache Providers Use: PooledRedisClientManager, BasicRedisClientManager or see: https://github.com/ServiceStack/ServiceStack/wiki/Caching container.Register<ICacheClient>(new MemoryCacheClient()); container.Register<ISessionFactory>(c => new SessionFactory(c.Resolve<ICacheClient>())); ``` ConfigureAuth() is similar to the SocialBootstrapApi sample (not exactly the same but close) - I don't think there's something missing here. So how does this work?