卡在ASP.NET MVC DLL地狱，剃刀组件问题中

Question

I'm currently dealing with a problem on a ASP.NET MVC4 Application, I did a change of .NET Framework (from 4.5 to 4 then to 4.5 again) and it updated my NuGet packages so my Web.config is all messed up and i can't get rid of those errors that the YSOD shows me. Can you explain me a bit what can i do to correct those errors ?

Here's the error i get.

[A]System.Web.WebPages.Razor.Configuration.HostSection cannot be cast to [B]System.Web.WebPages.Razor.Configuration.HostSection. Type A originates from 'System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' in the context 'Default' at location 'C:\\Windows\\Microsoft.Net\\assembly\\GAC_MSIL\\System.Web.WebPages.Razor\\v4.0_2.0.0.0__31bf3856ad364e35\\System.Web.WebPages.Razor.dll'. Type B originates from 'System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' in the context 'Default' at location 'C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\Temporary ASP.NET Files\\root\\5ccfcdb0\\4d5a6f51\\assembly\\dl3\\5f700272\\1350df4e_ebe9ce01\\System.Web.WebPages.Razor.dll'.

Answer 1

Okay i solved my problem by myself.

I updated manually in the Web.config (from the Views Folder) the configuration to Version=3.0.0.0 and the version of the MvcWebRazorHostFactory (same file) to Version=5.0.0.0