Could not load file or assembly 'system.web.helpers' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

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MVC4

When i am runing my application i am geting error kindly solve my problem.

What I have tried:


<!--
For more information on how to configure your ASP.NET application, please visit
http://go.microsoft.com/fwlink/?LinkId=169433
-->

<configuration>
<configsections>
<sectiongroup name="dotNetOpenAuth" type="DotNetOpenAuth.Configuration.DotNetOpenAuthSection, DotNetOpenAuth.Core">

<appsettings>
<add key="webpages:Version" value="2.0.0.0">
<add key="webpages:Enabled" value="false">
<add key="PreserveLoginUrl" value="true">
<add key="ClientValidationEnabled" value="true">
<add key="UnobtrusiveJavaScriptEnabled" value="true">


<system.web>

<httpruntime targetframework="4.5">

<compilation debug="true" targetframework="4.5">

<pages>
<namespaces>
<add namespace="System.Web.Helpers">
<add namespace="System.Web.Mvc">
<add namespace="System.Web.Mvc.Ajax">
<add namespace="System.Web.Mvc.Html">
<add namespace="System.Web.Routing">
<add namespace="System.Web.WebPages">
<add namespace="GridMvc">



<system.webserver>
<validation validateintegratedmodeconfiguration="false">

<handlers>
<remove name="ExtensionlessUrlHandler-Integrated-4.0">
<remove name="OPTIONSVerbHandler">
<remove name="TRACEVerbHandler">
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" precondition="integratedMode,runtimeVersionv4.0">

<runtime>
<assemblybinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentassembly>
<assemblyidentity name="System.Web.Mvc" publickeytoken="31bf3856ad364e35" culture="neutral">
<bindingredirect oldversion="0.0.0.0-4.0.0.0" newversion="4.0.0.0">

<dependentassembly>
<assemblyidentity name="System.Web.WebPages" publickeytoken="31bf3856ad364e35" culture="neutral">
<bindingredirect oldversion="0.0.0.0-2.0.0.0" newversion="2.0.0.0">

<dependentassembly>
<assemblyidentity name="Newtonsoft.Json" publickeytoken="30ad4fe6b2a6aeed" culture="neutral">
<bindingredirect oldversion="0.0.0.0-6.0.0.0" newversion="6.0.0.0">

<dependentassembly>
<assemblyidentity name="WebGrease" publickeytoken="31bf3856ad364e35" culture="neutral">
<bindingredirect oldversion="0.0.0.0-1.5.2.14234" newversion="1.5.2.14234">

<dependentassembly>
<assemblyidentity name="System.Web.WebPages.Razor" publickeytoken="31bf3856ad364e35" culture="neutral">
<bindingredirect oldversion="0.0.0.0-2.0.0.0" newversion="2.0.0.0">

<dependentassembly>
<assemblyidentity name="System.Web.Helpers" publickeytoken="31bf3856ad364e35" culture="neutral">

<bindingredirect oldversion="0.0.0.0-4.1.0.0" newversion="4.1.0.0">


<!-- This prevents the Windows Event Log from frequently logging that HMAC1 is being used (when the other party needs it). --><legacyhmacwarning enabled="0"><!-- When targeting ASP.NET MVC 3, this assemblyBinding makes MVC 1 and 2 references relink
to MVC 3 so libraries such as DotNetOpenAuth that compile against MVC 1 will work with it.
<assemblybinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentassembly>
<assemblyidentity name="System.Web.Mvc" publickeytoken="31bf3856ad364e35">
<bindingredirect oldversion="1.0.0.0-3.0.0.0" newversion="3.0.0.0">


-->

<system.net>
<defaultproxy enabled="true">
<settings>
<!-- This setting causes .NET to check certificate revocation lists (CRL)
before trusting HTTPS certificates. But this setting tends to not
be allowed in shared hosting environments. -->
<!--<servicepointmanager checkcertificaterevocationlist="true">-->

<dotnetopenauth>
<messaging>
<untrustedwebrequest>
<whitelisthosts>
<!-- Uncomment to enable communication with localhost (should generally not activate in production!) -->
<!--<add name="localhost">-->



<!-- Allow DotNetOpenAuth to publish usage statistics to library authors to improve the library. -->
<reporting enabled="true">
<!-- This is an optional configuration section where aspects of dotnetopenauth can be customized. --><!-- For a complete set of configuration options see http://www.dotnetopenauth.net/developers/code-snippets/configuration-options/ --><openid>
<relyingparty>
<security requiressl="false">
<!-- Uncomment the trustedProviders tag if your relying party should only accept positive assertions from a closed set of OpenID Providers. -->
<!--<trustedproviders rejectassertionsfromuntrustedproviders="true"> <add endpoint="https://www.google.com/accounts/o8/ud">
-->

<behaviors>
<!-- The following OPTIONAL behavior allows RPs to use SREG only, but be compatible
with OPs that use Attribute Exchange (in various formats). -->
<add type="DotNetOpenAuth.OpenId.RelyingParty.Behaviors.AXFetchAsSregTransform, DotNetOpenAuth.OpenId.RelyingParty">

<uri>
<!-- The uri section is necessary to turn on .NET 3.5 support for IDN (international domain names),
which is necessary for OpenID urls with unicode characters in the domain/host name.
It is also required to put the Uri class into RFC 3986 escaping mode, which OpenID and OAuth require. -->
<idn enabled="All">
<iriparsing enabled="true">