ASP.NET MVC Application has SecurityException

I am trying to get an ASP.NET MVC application to work ... I should have known it would not be easy. The first few pages work, but they are all static. The first time I execute the checker, I get the below exception.

Here's how the controller works:

[AcceptVerbs(HttpVerbs.Get)]
public ActionResult Index(Section? section, int? parent)
{
    if (section == null)
    {
        return RedirectToAction("Index", "Questions", new {section = Section.Section0});
    }

    IPagedList<Question> questions = _surveyService.FetchQuestions(User.Identity.Name, section.Value, parent);

    // ...

    ViewResult result = View("Index", questions);
    result.ViewData.Add("CurrentSection", section.Value);
    result.ViewData.Add("Parent", parent);
    result.ViewData.Add("IsLastPage", questions.IsLastPage);

    return result;
}

      

        
        
        
      

    

An exception was thrown on the second line of the method in RedirectToAction()

.

Background:

• I followed the instructions in this answer .
• I am not using reflection or requiring security explicitly in my code.
• I am using MVC , LINQ to SQL , Elmah > and PagedList .
• I am using IIS 7 with Built in .
• I added [ assembly: AllowPartiallyTrustedCallers ] to my AssemblyInfo.cs. I did this because I found another Stack Overflow question that had an answer recommending it (I can't find it now, otherwise I would provide a link). I've also strongly named my builds as suggested by Rex M below.

What am I missing to make this work?

An exception:

Server Error in '/surveys/objectification' Application.
    Security Exception
    Description: The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application trust level in the configuration file.

    Exception Details: System.Security.SecurityException: That assembly does not allow partially trusted callers.

    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:

    [SecurityException: That assembly does not allow partially trusted callers.]
       SelfObjectificationSurvey.Web.Controllers.QuestionsController.Index(Nullable`1 section, Nullable`1 parent) +0
       lambda_method(ExecutionScope , ControllerBase , Object[] ) +123
       System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +17
       System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +178
       System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +24
       System.Web.Mvc.<>c__DisplayClassa.<InvokeActionMethodWithFilters>b__7()
+53
       System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +258
       System.Web.Mvc.<>c__DisplayClassc.<InvokeActionMethodWithFilters>b__9()
+20
       System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +193
       System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
+382
       System.Web.Mvc.Controller.ExecuteCore()
+123
       System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +23
       System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +7
       System.Web.Mvc.MvcHandler.ProcessRequest(HttpContextBase httpContext) +144
       System.Web.Mvc.MvcHandler.ProcessRequest(HttpContext httpContext) +54
       System.Web.Mvc.MvcHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext httpContext) +7
       System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
+181
       System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
+75


    Version Information: Microsoft .NET Framework Version:2.0.50727.3074; ASP.NET Version:2.0.50727.4049