asp.net-mvc-4 - 找不到入口点异常

Question

我已经安装了vs2012 (11.0.50727.1)，
我打开了一个新的 MVC4 with .NET 4.5 解决方案，
我创建了一个简单的HomeController，并且因为我想在本地启动它，所以我收到了一个非常奇怪的错误:
怎么解决呢？这是什么错误，为什么会发生？？？

预先感谢您的帮助。

    Server Error in '/' Application.
Entry point was not found.
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.EntryPointNotFoundException: Entry point was not found.

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:


[EntryPointNotFoundException: Entry point was not found.]
   System.Web.Mvc.IDependencyResolver.GetService(Type serviceType) +0
   System.Web.Mvc.DependencyResolverExtensions.GetService(IDependencyResolver resolver) +56
   System.Web.Mvc.SingleServiceResolver`1.GetValueFromResolver() +44
   System.Lazy`1.CreateValue() +180
   System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() +22
   System.Lazy`1.get_Value() +10749357
   System.Web.Mvc.SingleServiceResolver`1.get_Current() +15
   System.Web.Mvc.MvcRouteHandler.GetSessionStateBehavior(RequestContext requestContext) +121
   System.Web.Mvc.MvcRouteHandler.GetHttpHandler(RequestContext requestContext) +33
   System.Web.Mvc.MvcRouteHandler.System.Web.Routing.IRouteHandler.GetHttpHandler(RequestContext requestContext) +10
   System.Web.Routing.UrlRoutingModule.PostResolveRequestCache(HttpContextBase context) +9709656
   System.Web.Routing.UrlRoutingModule.OnApplicationPostResolveRequestCache(Object sender, EventArgs e) +82
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +136
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.17929 

Answer 1

当您将项目从MVC3切换到MVC4时，如果忘记将web.config中的System.Web.WebPages.Razor, Version=1.0.0.0更改为System.Web.WebPages.Razor, Version=2.0.0.0，也会出现相同的错误。