Unknown error 1140 on attempting iPhone synch.
I have updated my iPad 2 & my iPhone 4s to IOS 6. My mac is running OSX 10.8.2 and iphoto 9.4 Now I cannot synch my IOS devices to my Mac unless I deselect synchronisation of photos. The error reported is "Unknown error 1140". Do I need to restore my IOS devices? I am guessing that this is a problem relating to the iphoto update which rebuilt the photo library. Suggestions as to how I solve this problem would be welcome.