Many users have been experiencing problems with iPhoto '11 when upgrading their photo libraries. This software update should correct the problem. Before attempting to convert your iPhoto '09 or earlier database, be sure to apply this update to your iPhoto '11 installation.
About iPhoto 9.0.1
This update addresses issues that, in extremely rare cases, could result in data loss when upgrading a library from an earlier version of iPhoto.
For detailed information on this update, please visit this website: http://support.apple.com/kb/HT4431
The steps you should follow in updating your library are as follows:
- Back-up your iPhoto Library - Easiest way is to copy the library to an external drive (this can take a while if you library is large)
- Install iLife '11 - This includes the upgrade to iPhoto '09
- Install the update to iPhoto '11 - Run software update and it should immediately appear
- Only after you have confirmed that iPhoto 9.0.1 is your current version, launch iPhoto '11