After my recent OS X 10.2.5 upgrade (from 10.2.4), my Address Book application ceased working. Referencing Apple Support Document I followed the instructions and the Address Book still would not work giving the exact same error code. After some additional searching, the documentation stated most of the original apps are on the restore disk. I went through the restore and selected OSX applications only ... only a few 3rd party apps were installed (~5 apps total, like Image Convert, OmniGraffle, & others) and not the Address Book. Could anyone help me out with a technique to re-install the address book? Does anyone know where the address book application can be found on any of the apple install/restore disks or on any website? My system is a Dual 1Ghz w/ the double mirrored doors ... initially had OSX 10.2 at the time of purchase ... upgraded to 10.2.5. Thanks!