I've just gotten hold of a 16GB 3GS off a colleague who just got an iPhone 4. I plugged it into iTunes and restored from a backup made from my 3G. It confirmed the phone was unlocked and activated properly, its synced all my data across, but when it comes to the end of the sync, it gives this error: It has synced all the data and the phone works fine, but I can't for the life of me work out why it is giving this error. Has anyone seen this before? I've reinstalled iTunes off the Apple website and it persists. I'm using a 2009 Intel MacBook with OSX 10.6.4 on it.