I just went through the process of updating my OS from Snow leopard 10.5.8 to Mountain Lion 10.8.2
all other operations have been updated and working , I did not update Iphoto from 7.1.5 mainly because
of problems seen on comments pages about newest Iphoto update ,. Just wondering if that's the issue ,
can't save photos from mail to Iphoto.
Sorry, I don't use iPhoto at all, if you don't get a helpful reply here, you might try reposting in ML or iPhoto forums...