iPhoto and iMovies not working in Yosemite

Contact App Store support. There's a link on the right hand side of the App Store Window. They're the only ones who can sort out account issues.

Try launching the app from the App Store.

I upgraded two machines to Yosemite over the weekend. Just downloaded iPhoto 9.6 to my wife's machine. App was purchased with my iTunes account, but downloaded it with her account. Was prompted that purchase was made by another family member but OK to download again.

First attempt to launch from the Finder resulted in same non-behavior you experienced.

Second attempt/same result (non-launch).

Went to check download to confirm install was complete. iPhoto was reporting 'Installing'.

Checked /Applications in the Finder to confirm app was downloaded and displaying proper icon. It was.

Quit and Relaunched App Store.

Navigated to "Apps by Apple" (Purchases should work just as well). iPhoto now reporting "Open". Clicked 'Open' button and app launched successfully.

I had the same problem - iPhoto and iMovie wouldn't open after upgrading to Yosemite, but I stumbled upon a fix that seems too good to be true:

I repaired permissions in Disk Utility and the restarted my Mac. Presto! Both apps work fine now.

(I had tried the reinstall thing before and it didn't solve the problem.)

I had the exact same problem that was fixed by Hagandv's solution (I didn't even have to restart my Mac):

"I repaired permissions in Disk Utility and the restarted my Mac. Presto! Both apps work fine now."

Thanks, Hagandv!

My problem is a little different. I am running Yosemite and now iPhoto just spins and spins without bringing up my Library of thousands of photos. Everything worked fine before Yosemite and subsequent upgrade to iPhoto 9.6 (910.29).

iMac (27-inch Late 2009), OS X Yosemite (10.10)

Are you able to create a new library and use it? If so then it's your current library that is the culprit and needs to be repaired, i.e. launch iPhoto with the Command + Option keys held down and repair the library's database file in the First Aid window.

Fixed it.

First: I repaired permissions in Disk Utility and the restarted my Mac.

Second: iPhoto started and said I needed to repair my Library due to inconsistencies.

I clicked to do that and - Presto! iPhoto works fine now.

iMac (27-inch Late 2009), OS X Yosemite (10.10), iPhoto 9.6

Try deleting the apps and redownload again...!! this will work 100 % and for redownloading follow the below mentioned link:

http://support.apple.com/kb/HT4482

That fixed it for me. Thanks!

iMovie isn’t responding in Yosemite after I upgraded.

Come on Apple - sort it out.

Apple aren't here. Didn't you read what you've signed up to? Why are you posting in the iPhoto forum? Why not ask in the iMovie forum? Come on Archimash - sort it out.

Desolé!

It says the latest update of iPhoto is not available in the uk so i can't update!

See my response to your other post.

It would seem in the dash to bring out Yosemite, Apple did not make it compatible with iPhotos and as a result iPhotos is greyed out and unusable. Instead Apple have codged together a much lesser facility called 'Photos', it is nowhere near as good as iPhotos was and lacks the proper editing facilities . Its disgusting that millions of people have iPhoto and know how to use it and they have been throwin in the rubbish bin.

Just a year or two back Apple also removed the ability to play and record disks as an integral part of their computers. Some stupid notion of making the computer thinner ! (Who wants thinner if it means loss a of essential components ) Now you have to buy an external drive, more wires !

Both Mavericks and Yosemite are pretty flaky and at times seem to be less stable. Apple which once produced the best computers in the world now seem to be in a race to the bottom to become the worse.....

Apple if you wish us to use photos for some obscure reason, then at least make it as good as iPhoto. Please remember the public do not have to buy from Apple , you have to win them over and wish to buy from you