I can't update iPhoto
I have been trying to open the iPhoto app on my mac, but whenever I do this a message appears saying that I need to update the app because it is not compatible with OS X Yosemite. I checked the app's new update but it can't be downloaded, and the message I receive is that the item is temporarily unavailable.
Basically, this app doesn't work, I can't use it, and I don't know what to do.
MacBook Pro with Retina display, iOS 9.0.2