Html.RenderAction causes "No route in the route table matches the supplied values"

I'm trying to use Html.RenderAction in ASP.NET MVC 2 RC2 in this way:

In Menu Controler:

[ChildActionOnly]
public ActionResult ContentPageMenus()
{
     var menus = _contentPageMenuRepository.GetAll().WithCulture(CurrentCulture);
     return PartialView(menus);
}

And in my Index view (for Index action of Home controller):

 <% Html.RenderAction("ContentPageMenus", "ContentPageMenu");%>

But I always get this error message: No route in the route table matches the supplied values.