Just downgraded back to Snow Leopard, and installed Aperture 3.0.
I used to run Mountain Lion and Aperture 3.3.2, which of course upgraded my photo library.
Can anyone tell me how to "downgrade" the library to make it work with the older version? Thanks!
Yes find a backup of the library from then, there is no way to downgrade a library, sorry.
Thanks for the brutal truth... I will manually re-import the photos from the time machine back-up.
Pity Apple is not really supporting Snow Leopard any more, I think the Mac OS has gone downhill since then...
Retrieving data ...