Html.ActionLink(".....Click Here for Confirmation.....", 
                "RegisterConfirmation", "Account", new { id = @ViewBag.ConfirmationToken }, null)

        public static T DeserializeFromFile<T>(string filePath, JsonSerializerSettings settings = null)
        {
            if (!File.Exists(filePath))
                return default(T);

            using (var fileStream = File.OpenRead(filePath))
            {
                using (var streamReader = new StreamReader(fileStream))
                {
                    using (var reader = new JsonTextReader(streamReader))
                    {
                        var serializer = settings == null ? JsonSerializer.Create() : JsonSerializer.Create(settings);
                        return serializer.Deserialize<T>(reader);
                    }
                }
            }
        }

        public static void SerializeToFile(string filePath, object data, JsonSerializerSettings settings = null)
        {
            using (var fileStream = new FileStream(filePath, FileMode.Create))
            {
                using (var streamReader = new StreamWriter(fileStream))
                {
                    using (var reader = new JsonTextWriter(streamReader))
                    {
                        var serializer = settings == null ? JsonSerializer.Create() : JsonSerializer.Create(settings);
                        serializer.Serialize(reader, data);
                    }
                }
            }
        }

Line 77: var webPropertyListRequest = service.Management.Webproperties.List(account.Id);

Object reference not set to an instance of an object.