C# Invalid JSON Primitive Reading from Cookie

I'm using JQuery.Cookie to store a javascript object as a cookie value: ``` var refinerData = {}; // Read in the current cookie if it exists: if ($.cookie('RefinerData') != null) { refinerData = JSON.parse($.cookie('RefinerData')); } // Set new values based on the category and filter passed in switch(category) { case "topic": refinerData.Topic = filterVal; break; case "class": refinerData.ClassName = filterVal; break; case "loc": refinerData.Location = filterVal; break; } // Save the cookie: $.cookie('RefinerData', JSON.stringify(refinerData), { expires: 1, path: '/' }); ``` When I debug in firebug, the value of the cookie value seems to be formatted correctly: {"Topic":"Disease Prevention and Management","Location":"Hatchery Hill Clinic","ClassName":"I have Diabetes, What can I Eat?"} I'm writing a SharePoint web part in C# that reads the cookie in and parses it: ``` protected void Page_Load(object sender, EventArgs e) { HttpCookie cookie = HttpContext.Current.Request.Cookies["RefinerData"]; if (cookie != null) { string val = cookie.Value; // Deserialize JSON cookie: JavaScriptSerializer serializer = new JavaScriptSerializer(); var refiners = serializer.Deserialize<Refiners>(cookie.Value); output.AppendLine("Deserialized Topic = " + refiners.Topic); output.AppendLine("Cookie exists: " + val); } } ``` I have a Refiners class for serializing to: ``` public class Refiners { public string Topic { get; set; } public string ClassName { get; set; } public string Location { get; set; } } ``` However, this code throws an "Invalid JSON Primitive" error. I can't figure out why this isn't working. One possibility is that its not reading the cookie correctly. When I print out the value of the cookie as a string, I get: %7B%22Topic%22%3A%22Disease%20Prevention%20and%20Management%22%2C%22Class%22%3A%22Childbirth%20%26%20Parenting%202013%22%2C%22Location%22%3A%22GHC%20East%20Clinic%22%7D