[HttpGet] causes blank page!

Question

I'm starting to use ASP.NET MVC2 and I was using [AcceptVerbs(HttpVerbs.Get)], so I changed to [HttpGet] and now I get a blank page!

I know I've missed something what is it?

The working version looks like this:

    [AcceptVerbs(HttpVerbs.Get)]
    public ActionResult Details(int id)
    {
       ...
    }

When I change it to this it fails to execute the method and dispays a blank page:

    [HttpGet]
    public ActionResult Details(int id)
    {
       ...
    }

And the routing for this is defined as:

routes.MapResourceRoute("component", "{id}");