The length of the string exceeds the value set on the maxJsonLength property

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JavaScriptSerialzer has a public property named MaxJsonLength according to

http://msdn.microsoft.com/en-us/library/system.web.configuration.scriptingjsonserializationsection.maxjsonlength.aspx

Now, where you are deserializing your json, use this

JavaScriptSerializer serializer = new JavaScriptSerializer();
serializer.MaxJsonLength = Int32.MaxValue; //Or any size you want to use, basically int maxValue is 2GB, you shouldn't need this big json string to deserialize, else you are doing it wrong.
myObject obj = serializer.Deserialize<myObject>(yourJsonString);

And this should work perfectly, I recently figured this out through msdn and solved a problem that was bugging me for long.

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