iPhoto 9.2 was crashing like crazy for me. It’s always been very reliable, but then when I enabled Photostream, all hell broke loose.
It turns out that the problem was with 3ivxVideoCodec.component.
Worse, it turns out that this little bugger had been causing problems with various apps for years as I’ve seen a history of people claiming problems with iPhoto, iTunes, Aperture, iMovie, QuickTime, and possibly other apps.
The Stupid Little Blog, shows how you can search for the file 3ivxVideoCodec.component and remove it, but some people have left comments saying that they aren’t finding it.
Apple made finding files much harder in some ways under Lion.
One annoying thing they did was to hide certain folders. However, MikeSel.info has a page showing how you can unhide the hidden folders/files in 10.7 Lion.
The short answer is to use the following terminal command to show hidden folders/files:
defaults write com.apple.Finder AppleShowAllFiles YES
And the following to undo this (hide folders/files that Apple thinks should be hidden:
defaults write com.apple.Finder AppleShowAllFiles NO
Restart, or re-login for the changes to take effect. Alternatively you could Option-Right-Click on the Finder icon in your Dock and select Relaunch.
If you have the FTP application Transmit, you can use that to both browser hidden folders/files, and delete them. Other applications may allow browsing/deletion of hidden folders/files as well.
Once you’ve revealed your hidden folders/files, you can go to:
(That’s the top level of your system hard drive -> Library -> QuickTime)
From that directory, delete 3ivxVideoCodec.component (if present).
Restart your Mac.
You may be able to relaunch iPhoto with everything working ok, but I’d recommend holding down the Option-Command keys while launching iPhoto and then let iPhoto repair/rebuild your library and thumbnails.
Alternatively, or if the repair/rebuild fails, you can restore your iPhoto library from Time Machine. You do archive with Time Machine on a regular basis don’t you?