System.ArgumentException в System.Drawing.dll при работе с Gif

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
 
namespace WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        Bitmap RotatingBlocks;
        Point DrawHere;
        Rectangle InvalidRect;
 
        public Form1()
        {
            InitializeComponent();
            RotatingBlocks = new Bitmap("SampleAnimation.gif");
            DrawHere = new Point(10, 10);
            InvalidRect = new Rectangle(DrawHere, RotatingBlocks.Size);
 
            this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            this.SetStyle(ControlStyles.DoubleBuffer, true);
 
 
        }
 
 
        protected override void OnPaint(PaintEventArgs e)
        {
            ImageAnimator.UpdateFrames(RotatingBlocks);
 
            e.Graphics.DrawImage(RotatingBlocks, DrawHere);
        }
 
        private void OnFrameChanged(object o, EventArgs e)
        {
 
            this.Invalidate(InvalidRect);
        }
 
        private void Form1_Load(object sender, EventArgs e)
        {
            if (ImageAnimator.CanAnimate(RotatingBlocks))
            {
 
                ImageAnimator.Animate(RotatingBlocks,
                                      new EventHandler(this.OnFrameChanged));
 
 
            }
        }
 
    }
}

RotatingBlocks = new Bitmap("SampleAnimation.gif");