First off, answers to this question,do NOT solve my error:

[Upgrading WebGrease to version 1.3.0 gets me error](https://stackoverflow.com/questions/13619255/upgrading-webgrease-to-version-1-3-0-gets-me-error)

I have the following bindingredirect on my production server:

```
<dependentAssembly>
    <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-1.3.0.0" newVersion="1.3.0.0" />
</dependentAssembly>

```

I have the following DLL's on my production server that are required for the Microsoft ASP.NET Web Optimization Framework:

1. System.Web.Optimization.dll 1.0.0.0 (this is NOT pre-release version)
2. Antlr3.Runtime.dll 3.3.1.7705
3. Webgrease.dll 1.3.0.0

I am getting the following error:

`Could not load file or assembly 'WebGrease, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)`

I have checked the GAC, I have deleted all Temporary ASP.NET folders, I have tried removing the `newVersion` attribute from my config `<bindingRedirect>`. I am not sure what is telling ASP.NET to look for WebGrease 1.0