I just got my 40D last week and was so excited. So far i've taken photos with it everyday and I have used the pop-up flash before. Now when I try to pop it up, it makes this loud clicking noise 3 times and an error 5 pops up saying, "The built-in flash's auto pop-up was obstructed. Turn the power off then on again" I did that and it does the same thing each time. Can someone help me!