MissingMethodException was unhandled. Could not load type 'Newtonsoft.json'

Question

I am developing an project for Windows CE 5.0 using .Net 2.0 Compact. I am developing on using MS Visual Studio 2008.

All went good until I had to work with JSON. I tried to use the newtonsoft.json library but when calling a function from it i get this error:

  Could not load type 'Newtonsoft.Json.JsonConvert' from assembly 
'Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30AD4FE6B2A6AEED'.

How can i fix this?