Cant Find JsonConvert.cs

Jun 13, 2014 at 2:52 AM
I'm in Visual Studio 2010 c# using the 4.0 framework. I was trying the sample on this page:

When I try and Run the project, it tells me it cant find JsonConvert.cs. I have the DLL in my project references and I used the version that matches my target framework. Any idea why this might be happening?