Additional information: Could not load file or assembly 'Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies.

Additional information: Could not load file or assembly 'Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

I having problem with NewtonSoft.json v4.5 when I added some package from nugget. To solve this, I ensured all my projects used the same version by running the following command and checking the results:

 try using this in web.config or app.config:

Update-Package –reinstall Newtonsoft.Json

OR

<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>