how to fix lazyload bug?

[Sandy Young <ho...@gmail.com>]

When I use DataMapper-1.6.1 instead of DataMapper-1.5.1, I find the lazyload
function doesn't work.
 If I replace DataMapper-1.6.1 with older DataMapper-1.5.1, it works.
 I find this bug is reported as a bug in ibatis.net's Issue Tracker.
Is there anybody can fix it?
Thank you!

My code:

IRegDao dao = new RegDao();
            Reg reg = dao.Find(1);
            Console.WriteLine("Reg:");
            Console.WriteLine("SeqId:{0}", reg.SeqId);
            Console.WriteLine("SubjID:{0}\tName:{1}", reg.SubjID,
reg.Subj.Name);

///class Reg
public partial class Reg
    {
        #region Private Member
        private int? _SubjID;
        #endregion

        #region Private Extend Member
        private Subj _Subj;
        #endregion

        #region Constructor
        public Reg()
        {
        }
        #endregion

        #region Public Properties
        public int? SubjID
        {
            get {return _SubjID;}
            set {_SubjID = value;}
        }
        #endregion

        #region Public Extend Properties
        public virtual Subj Subj
        {
            get { return _Subj; }
            set { _Subj = value; }
        }
        #endregion
    }