Json.NET + VerificationException Operation could destabilize the runtime

Question

I am getting the \"Operation could destablize the runtime exception\". I goggled quite a bit, looks like exception has to do with conflicting assemblies being loaded at runt

Answer 1

This exception can occur when you have Visual Studio Ultimate and IntelliTrace activated.

Try to add Newtonsoft.dll on IntelliTrace ignore list:

• Tools -> Options -> IntelliTrace -> Modules
• Add -> Newtonsoft.

Answer 2

This bug is fixed in the latest version of Json.NET - http://james.newtonking.com/archive/2012/01/23/json-net-4-0-release-6-serialization-performance.aspx

Answer 3

This is a known issue.

You should be able to fix this by removing all references to the JSON .NET library and adding them again to the projects.

See also:

http://json.codeplex.com/workitem/20624

JSON.Net throwing System.Security.VerificationException: Operation could destabilize the runtime