“We’ve been getting an unusually large amount of user submissions about issues when upgrading from iPhoto ’09 to iPhoto ’11,” Seth Weintraub reports for 9 to 5 Mac.
“Specifically, some people are losing some or all of their photo libraries when upgrading,” Weintraub reports. “Also, iPhoto ’11 drops support for older AppleTVs as well as photo calendars.”
Weintraub reports, “Back up your photos and videos before doing the $49 iLife ’11 update.”
Full article, with a possible solution for some issues, here.
MacDailyNews Take: As always, back up your data before updating anything.