Structuremap does not work on MVC4

I've used StructureMap in MVC2/3 many times without any concern, but I guess handling IoC is different in MVC4. When i used StructureMap for handling IoC in MVC4 I get the following exception.:

No parameterless constructor defined for this object

Why? I have not found any correct result in google except this: IoC Not Working In MVC4 These is my IoC classes:

public static class IoC {
    public static IContainer Initialize() {
        ObjectFactory.Initialize(x =>
                    {
                        x.Scan(scan =>
                        {
                            //scan.Assembly("DLL.Core");
                            scan.Assembly("DLL.CMS");
                            scan.TheCallingAssembly();
                            scan.WithDefaultConventions();
                        });
                        x.For<IDbContext>().Use<ModelEntities>();
                        x.For(typeof(IRepository<>)).Use(typeof(Repository<>));
                        x.For<IHttpControllerActivator>();
                        x.For<IController>();
                    });

        return ObjectFactory.Container;
    }

And SmDependencyResolver is:

    public class SmDependencyResolver : IDependencyResolver
{
    private readonly IContainer _container;

    public SmDependencyResolver(IContainer container)
    {
        _container = container;
    }

    public object GetService(Type serviceType)
    {
        if (serviceType == null) return null;
        try
        {
            return serviceType.IsAbstract || serviceType.IsInterface
                     ? _container.TryGetInstance(serviceType)
                     : _container.GetInstance(serviceType);
        }
        catch
        {

            return null;
        }
    }

    public IEnumerable<object> GetServices(Type serviceType)
    {
        return _container.GetAllInstances(serviceType).Cast<object>();
    }
}

And my error is:

No parameterless constructor defined for this object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.MissingMethodException: No parameterless constructor defined for this object.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[MissingMethodException: No parameterless constructor defined for this object.] System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0
System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache) +98
System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean skipCheckThis, Boolean fillCache) +241 System.Activator.CreateInstance(Type type, Boolean nonPublic) +69
System.Web.Mvc.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType) +67

[InvalidOperationException: An error occurred when trying to create a controller of type 'Parsian.Web.Areas.Dashboard.Controllers.MemberController'. Make sure that the controller has a parameterless public constructor.]
System.Web.Mvc.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType) +182
System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType) +80
System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext requestContext, String controllerName) +74
System.Web.Mvc.MvcHandler.ProcessRequestInit(HttpContextBase httpContext, IController& controller, IControllerFactory& factory) +196 System.Web.Mvc.<>c__DisplayClass6.b__2() +49 System.Web.Mvc.<>c__DisplayClassb1.<ProcessInApplicationTrust>b__a() +13 System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7 System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22
System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Func1 func) +124 System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +98
System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback callback, Object state) +50
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData) +16
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8862676 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

Thanks for correct answers.

oops.I found an emergency solution :) Try to implement a class from IControllerActivator

public class StructureMapControllerActivator : IControllerActivator
{
   private IContainer _container;
    
   public StructureMapControllerActivator(IContainer container)
   {
       _container = container;
   }
    
   public IController Create(RequestContext requestContext, Type controllerType)
   {
       return _container.GetInstance(controllerType) as IController;
   }
}

and then register it to the IoC class:

 x.For<IControllerActivator>().Use<StructureMapControllerActivator>();

and then enjoy it. Good luck