I believe I did what the instructor did verbatim (it's the famous Stanford class available in iTunes U for iOS Programming), but my app (it's a simple app) won't work and errors out if I press a button. I click run, and it builds, but when I click a button in the iOS simulator the app crashes and brings me back to Xcode with an error. I don't know what I did wrong. It brings me to the main.m file when we didn't even deal with that in the Stanford guide (maybe it has to do with the fact that the Stanford guide uses iOS 5.0 and I'm on 5.1?). Here's the project if anyone wants to take a lot at it. I'm just really confused. http://cl.ly/212A3q3J1m1F1y3A041A (Also, did I just need to include the xcodeproject file, or was I right in including the whole project folder in a zip file?) Thanks.