Could not load file orassembly 'System.Web.Helpers'
or one of its dependencies. The locatedassembly's
manifest definition does not match the assembly reference.
(Exception from HRESULT: 0x80131040)
Description: Anunhandled exception occurred during the execution of the current web request.Please review t
he stack trace for more information about the error and where itoriginated in the code.
Exception details:System.IO.FileLoadException:Could not load file or assembly 'System.Web.Helpers'
or one of itsdependencies. The located assembly's manifest definition does not match the
assembly reference. (Exception from HRESULT: 0x80131040)
You need to Uninstall Microsoft Aspnet mvc from the project by using Package manager console and reinstall it.
Uninstall-Package Mictrosoft.AspNet.Mvc
You can also remove the installed package by deleting the following command from the package.config.
<package id="Microsoft.AspNet.Razor" version="3.2.3" targetFramework="net45" />
Reinstall package by using the command,
PM> Install-Package Mictrosoft.AspNet.Mvc