مساعدة في ال xml serialization

عندي class أريد أن اجري عليه عملية serialization باستخدام xml serializer ولكن يظهر لي خطأ عندما أقوم بعملية deserializ

    public class DesignClass
    {
        #region Properites
        private int id=0;

        public int Id
        {

            get { return id; }
            set { id = value; }
        }

        private object user;

         public object User
        {
            get { return user; }
            set { user = value; }
        }


        private System.Drawing.Printing.PageSettings pageSettings;

        public System.Drawing.Printing.PageSettings _PageSettings
        {
            get { return pageSettings; }
            set { pageSettings = value; }
        }

        private string code;
        public string Code
        {
            get { return code; }
            set { code = value; }
        }

        private string idReport;

        public string IdReport
        {
            get { return idReport; }
            set { idReport = value; }
        }
        private float version=0;

        public float Version
        {
            get { return version; }
            set { version = value; }
        }

        private BindingList<ResourceClass> resources;

        public BindingList<ResourceClass> _Resources
        {
            get { return resources; }
            set { resources = value; }
        }

        private bool printPermission=true;


        public bool PrintPermission
        {
            get { return printPermission; }
            set { printPermission = value; }
        }

        private bool designPermission=true ;        
        public bool DesignPermission
        {
            get { return designPermission; }
            set { designPermission = value; }
        }
  #endregion
}