c#.net启动动画和更滑皮肤界面不能正常显示

启动动画显示的界面不出现图片
皮肤这块已经引用了IrisSkin4，感觉没啥毛病啊，求大佬帮看

皮肤代码

public 皮肤()
        {
            InitializeComponent();
        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {
            this.skinEngine1.SkinFile = "WarmColor2.ssk";
        }

        private void pictureBox2_Click(object sender, EventArgs e)
        {
            this.skinEngine1.SkinFile = "MacOS.ssk";
        }

        private void pictureBox3_Click(object sender, EventArgs e)
        {
            this.skinEngine1.SkinFile = "MidsummerColor3.ssk";
        }

        private void pictureBox4_Click(object sender, EventArgs e)
        {
            this.skinEngine1.SkinFile = "XPGreen.ssk";
        }

启动动画在program.cs中的代码

static class Program
    {
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            启动.ShowSplashScreen();
            System.Threading.Thread.Sleep(3000);
            if (启动.Instance != null)
            {
                启动.Instance.BeginInvoke(new MethodInvoker(启动.Instance.Dispose));
                启动.Instance = null;
            }

            Application.Run(new Login());
        }
    }

https://blog.csdn.net/tiandijun/article/details/44942777