WaitingBar will not start animation

I am using the following code and cannot get the WaitingBar to start animation.  I was running a Task, but tried adding a DoEvents and a Sleep to see if I could get it going.  Not sure why.  I am using the same WaitingBar in other places in my app and it works fine, but not here.

                            radWaitingBar1.Visible = true;
                            radWaitingBar1.Text = "Downloading files";
                           // radWaitingBar1.ResetWaiting();
                            radWaitingBar1.StartWaiting();
                            Application.DoEvents();
                            Thread.Sleep(5000);
                            //task = Task.Run(() => Run("um.zip"));
                            //task.Wait();
                            radWaitingBar1.StopWaiting();
                            radWaitingBar1.Visible = false;