Every time I try sync with iTunes on my Mac it gives error -50 cannot be synced in all devices (iPads, iPhones)
Every time I try sync with iTunes on my Mac it gives error -50 cannot be synced in all devices (iPads, iPhones). This has been happening for about a year now probably and it's driving me crazy. I have searched the internet for solutions but non seemed to work. Ejecting and trying different USB cables does not work, restarting iTunes, restarting devices and Macbook, internet connection, etc. Software is up to date on all devices including iTunes.
I don't see much troubleshooting specifically about this -50 error, oddly enough. It's as if is meant to say "an error occurred which we have no idea what it was or why, good luck!". Please help!
MacBook Pro (17-inch Early 2011), OS X Mavericks (10.9.1)