Currently Being ModeratedJul 30, 2012 9:40 PM (in response to vth)
Gatekeeper is an internal security feature of Mountain Lion. Its settings are accessible from the "Security & Privacy" pane of System Preferences. See http://support.apple.com/kb/HT5290 for more details.
For iPhoto, does the error say that your library is corrupted, or does it say the application cannot run? Do any windows come up? Did you purchase iPhoto from the Mac App Store? Have you applied the iLife updates from the App Store?
Currently Being ModeratedJul 30, 2012 9:41 PM (in response to vth)
Why do you think there's no Gatekeeper? There is no application named Gatekeeper.
As for iPhoto, here's some basic troubleshooting:
Currently Being ModeratedJul 30, 2012 9:45 PM (in response to vth)
GateKeeper is not an app but a few settings at the bottom of the General tab of System Preference/Security & Privacy.
For iPhoto first try running Software update from the Apple menu. My iPhoto gets messed up with my OS installs probably because it is a newer version than iLife 11 installs. Since I purchased the latest version through the Mac App Store I can simply trash the version installed by iLife 11 then re-install with the version in the Mac App Store to fix it.
Currently Being ModeratedJul 30, 2012 10:02 PM (in response to sberman)
this link is for a java update, is that required to fix iphoto?
Currently Being ModeratedJul 30, 2012 10:07 PM (in response to vth)
Nope. I changed the remark to say "please ignore".
Currently Being ModeratedJul 31, 2012 11:24 PM (in response to mattw gx)
when I click on the iPhoto icon it says it is either damaged or incomplete (the icon is not even that of iPhoto but a bunch of white pages with a crossed-out circle...
Not sure what to do...
Currently Being ModeratedJul 31, 2012 11:38 PM (in response to vth)
Reinstall iPhoto. Do that from the App Store if that's where you bought it. Otherwise, do it from the iWork 09 disk (and then do a software update).
Currently Being ModeratedJul 31, 2012 11:40 PM (in response to sberman)
it came installed when I bought the computer, does it mean that now I have to buy the newest version? And if I do will all my photos be lost?
Currently Being ModeratedJul 31, 2012 11:51 PM (in response to vth)
1. Make a back up of your iPhoto Library - you should always have a back up of it anyway.
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
2c: on 10.7 they're at
A Finder Window will open at that location and you can remove the iPhoto pkg files.
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.
Currently Being ModeratedJul 31, 2012 11:55 PM (in response to vth)
As Terence says above, you should see it on your "purchased" list in the App Store. You can download it from there.
Currently Being ModeratedAug 1, 2012 12:01 AM (in response to Terence Devlin)
where can I find the iPhoto library? Since I can't open the app I dont know where to find it.
Currently Being ModeratedAug 1, 2012 4:45 AM (in response to vth)
By default, it's in your Pictures Folder.