Visual Studio 2012 Web API project won't run - can't find Newtonsoft.Json

Question

After running a clean solution and rebuild, my MVC 4 Web API project stops working. It\'s can\'t find Newtonsoft.Json.

I know that MS is using this as the default JS

Answer 1

I combined a couple of the options the other SO contributors stated, plus a new one.

First, It turns out that Nuget 2.1 had some issues, and this issue was logged in a bug, and was fixed in 2.2.2. See here: https://nuget.codeplex.com/workitem/3050

So, I did the following steps:

1. Updated Nuget version to 2.2.2 as per the link
2. Removed all references to Json in my project by uninstalling from NUget (right click project and find package, and uninstall (Even this didn't do it)
3. Physically deleted the Package files from the computer. I found package files here: //projectdir/packages/Newtonsoft.JSON
4. Deleted the packages.config file from the physical directory (//projectname/packages.config)
5. Once this was all completed, I added Newtonsoft again via Nuget, then did a rebuild, and it worked.