I just upgraded from Unity 4.3.0 to 4.3.4 and now I am getting this error when I run my game: An exception of type 'System.MissingMethodException' occurred in Unknown Module. but was not handled in user code This is my line of code and I had been using Newtonsoft.Json without a problem until I upgraded... // Turn the JSON into C# objects highScoresResult = JsonConvert.DeserializeObject<HighScore>(rawJson); I have changed nothing since 4.3.0.. I have also exported to a clean directory.... Is there something new that I need to know about ? I am assuming something has changed with the WP8 plugins ??