Q: My iPhone5 and iPad Air won't sync by USB with iTunes 11.1.4(62)

Since updating to iTunes 11.1.4(62) both my iPhone 5 and iPad Air do not sync. I am using an Apple USB cable plugged directly into my 27" late 2012 iMac. WIth the phone I get an -50 error message. With theiPad Air it gets up to syncing Apps, and then gets hung up. I have rebooted all of the devices and iTunes multiple times, and it still does not work. Any ideas? I see a lot of people are having syncing troubles with iTunes 11.1.4(62) on different devices too.