Several users have reported problems syncing their iPhones after updating to iTunes 8.0.1. The most common error message is as follows: "an unknown error 13014."
As one reader writes:
"I just downloaded and installed iTunes 8.0.1 on my iMac running 10.5.5, and synced my non-3G iPhone. I immediately received an error message stating that "The phone '[my iPhone's name]' cannot be synced. An unknown error occurred (13014). Thinking I'd probably be able to fix it by resetting the phone, I did so.
"Now, 15 minutes into the reset, the phone is syncing nicely with no major issues, except that I'm still getting prompted that it can't be synced about every 15 seconds or so. It's even kind enough to queue up the errors so that if I ignore them for a few minutes I can go back and just click 'OK' half a dozen times and then go back to whatever I was working on. No idea of the cause, outside of the iTunes upgrade."
Users are reporting similar issues with the iPod touch.
Apple Dicussions poster Wade Dansby writes:
"I have the exact same issue with my iPod touch. As soon as I downloaded and installed the new iTunes update, all the problems started. Have tried restoring settings several times. To no avail."
In some cases, simply restarting the host computer and restarting the iPhone can resolve this issue. In other cases, this procedure is unsuccessful.