iP 4 Connected iP4 to my Mac. Message to update iP software appeared on Mac. I updated. After update was done, I later unplugged iPhone by mistake w/o "ejecting" in iTunes. NOW, all Apps on iP screen are still visible, but when I touch an App to launch it, it flashes as if starting then stops. Apps still visible, but none work. Have restarted and replugged in to Mac. No luck. Baffled.