Error in my thread class

namespace Anamate2ClassTest
{
    public partial class Form1 : Form
    {
        Thread[] thread;//=new Thread[2];
        AnamateClass[] Anamate;
        public Form1()
        {
            InitializeComponent();
        }
        //
        private void formLoad(object sender, EventArgs e)
        {
            int i,j;
            Anamate = new AnamateClass[2];
            for (i = 0; i < 2; i++)
            {
                Anamate[i] = new AnamateClass();
                Anamate[i].FILENAMEHEADER = "filename";
                Anamate[i].Input = new Sub[64];
                for (j = 0; j < 64; j++)
                {
                    Anamate[i].Input[j] = new Sub();
                    Anamate[i].Input[j].IMAGE =  Image();//<-- not sure about this line
	//=null;		//=new Image();	//=Image;
                }
               thread[i] = new Thread(new ThreadStart(Anamate[i].Fun));//<<****** error
            }
        }
    }
}

namespace Anamate2ClassTest
{
    public class Sub
    {
        private Image image;
        public Sub() { }
        public Sub(Image Ximage)
        {
            IMAGE = Ximage;
        }
        public Image IMAGE { get { return image; } set { image = value; } }
    }//Class Sub

    public class AnamateClass
    {
        public Sub[] Input;
        string filenameheader;
        public AnamateClass() {   }
        public AnamateClass(string Xfilenameheader)
        {
            FILENAMEHEADER = Xfilenameheader;
        }
        public string FILENAMEHEADER { get { return filenameheader; } set { filenameheader = value; } }
        public void Fun()
        {
            MessageBox.Show("Hello");
        }
        public Sub this[int i] { get { return Input[i]; } set { Input[i] = value; } }
    }
}