Q: 102 error when updating iPhoto 9.4.3

Hi

I keep getting a 102 error when trying to update to iPhoto to 9.4.3.

Originally I was updating the OS to 10.8.5 in App store by using the top level Update button (the button which allows to you run all current Apple updates with one click). This returned a 102 error. Then I tried installing all of the pieces of software individually, including 10.8.5, iTunes, Remote Desktop, Thunderbolt Firmware, etc., which worked fine until I got to the last one, iPhoto 9.4.3.

I have tried everything: booting into safe mode, zapping the PRAM (not sure why this would help but I'm throwing everything at this!) verifying the disk and repairing permissions, I've even tried calling on the Gods of Mac to favour me in return for the scrapping Word for Pages!

I've read a load of similar posts, some of which suggested overloaded Apple servers and others with no resolutions.

My current version of iPhoto won't run (9.2.3) but I desperately need to retrieve some client photos.

Any thoughts extremely welcome.

Regards

Andrew