I'm getting an iPhoto incomplete message when I try to open my iPhoto.

Question

I'm now getting an error message that says, "You can't open the application iPhoto because it may be damaged or incomplete."  The icon disappeared out of Launcher, and in my Applications folder, there's a circle with a line through it over the iPhoto icon.  It's not a photos problem; it's an application problem.  I purchased the latest iPhoto last summer from the App Store, and on my iMac, it shows that, but it won't let me download it again to my computer.  Help!

Answer 1

To re-install iPhoto
1. Put the iPhoto.app in the trash (Drag it from your Applications Folder to the trash)
2a: On 10.5:  Go to HD/Library/Receipts and remove any pkg file there with iPhoto in the name.
2b: On 10.6: Those receipts may be found as follows:  In the Finder use the Go menu and select Go To Folder. In the resulting window type
/var/db/receipts/
2c: on 10.7 they're at
/private/var/db/receipts
A Finder Window will open at that location and you can remove the iPhoto pkg files.
3. Re-install.
If you purchased an iLife Disk, then iPhoto is on it.
If iPhoto was installed on your Mac when you go it then it’s on the System Restore disks that came with your Mac. Insert the first one and opt to ‘Install Bundled Applications Only.
If you purchased it on the App Store or have a Recent Mac you can find it in your Purchases List.