How to reference version 1.1.0.0 of System.Web.Optimization assembly

Question

I am currently trying to use a file upload called the Jquery-File-Upload by BlueImp in my MVC 4 application via nugget. This file upload depends on System.Web.Optimization namespace to work.

My application keeps throwing this error:

Error 9 Assembly 'Backload, Version=1.9.3.0, Culture=neutral, PublicKeyToken=02eaf42ab375d363' uses 'System.Web.Optimization, Version=1.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' which has a higher version than referenced assembly 'System.Web.Optimization, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'

I tried adjusting the web.config thus

<dependentAssembly>
    <assemblyIdentity name="System.Web.Optimization" publicKeyToken="31bf3856ad364e35" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-1.1.0.0" newVersion="1.1.0.0" />
</dependentAssembly>

and I still keep getting the same message.

I have googled and found links asking to install Microsoft.AspNet.Web.Optimization via nugget, which I did and yet no problem solved.

Please how do I add the version 1.1.0.0 of System.Web.Optimization.dll.

Answer 1

This was how i resolved this issue. First i followed the @helgans comment under his answer and still kept getting the reference to version 1.0.0 of system.web.optimization in the reference folder. I also deleted the dll from the bin folder of my website and reference version 1.1.0 from another project, yet the same problem persist.

In solving the problem, I discovered that the older version was being copied from the library folder in my application (well i do not know how). This makes the referenced version remain version 1.0.0, even if i referenced version 1.1.0 from another project or re-install the NuGet package again.

To solve this problem, i did the following:

1. I deleted the dll from the Library folder.
2. Removed the reference of the older version (thanks to @helgans)
3. Removed the dll from the bin folder
4. Unistall the package: Uninstall-Package Microsoft.AspNet.Web.Optimization -Force
5. Re-install the package

The NuGet now adds reference to version 1.1.0