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The only thing we can do now is wait with the broken apps and report the problem with your app to the iTunes Store (https://getsupport.apple.com/).

Also if you can, get the apps from the developers. I have a feeling this will happen soon again....

Not gonna buy more apps from the app store, i rather give 30% more to the developers, instead of Apple.
 
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Have signed out of app store and logged back in. have deleted and reinstalled Adobe Photoshop Elements 10 again. And yet the app still gets the broken error message. ......sigh......
 
"The secret of Monkey Island" same issue...but without any popup message! :confused:
Just crash once opened.
 
A similar problem with expired certificates exists with Apple's iWork/iLife applications when attempting to install on machines stuck at OS/X 10.7.5 Lion. Two differences: the diagnostic says something relevant ("Certificate has expired" instead of "Corrupt application", and "Click OKAY to skip the certificate check".

Why is Apple going backward? Why doesn't Apple with all its billions of dollars hire a few people to ensure proper certification management? If Apple can take back what you've bought, then why don't they automatically refund the purchase price when doing so?

Sadly they are wasting their time and money on their HQ and their new Car.

I believe that just before the Roman empire collapsed they built a huge circular building. Then they built chariots to ride around in that building.
 
Had this problem with iFlicks 2, Reeder 3, Tweetbot, Checkbook Pro, some MAS Games, Art Text 2, White Noise, Movist. Kind of not at all funny. Deleting and re-downloading worked for all but Checkbook Pro. In a few cases I lost my preferences and settings.

You should be able to get your preferences/settings back by restoring the appropriate container from your backup. (~/Library/Containers.)
 
This happened to me yesterday with Movist an app from the app store. I was honestly really thinking my SSD was dying or something because it said the application was corrupt and wouldn't open even though I'd not erased any of its files and it's just a video player. Totally had me worried.

Reinstalling it from the App Store did make the error go away but it was worrying on a 5 month old computer to see a data corruption dialog box when launching a simple application that plays videos.
 
Yeah right, to fix this issue you can reboot or re-install the app. There are many issues with Windows 10 and the best fix for the majority of them is a Clean Install of the OS. WTF! Really!
Oh please. Half the time, when you call apple support, they tell you to restore your computer to a previous version or to reinstall OS X.
 
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As far as I can tell from some brute force checks, every Mac App Store app last installed, updated, or re-installed before the certificate expired, has the old certificate. Apps with the OS (or non App Store apps) don't appear to have that file in their bundle.

If I'm reading this correctly, what might be the next certificate above this (the certificate of the issuer of the one that's expired) will expire on Feb 14 18:56:35 2016 GMT.

Do we know whether that might cause similar problems in a few months?

edit: the certificate replacing the expired one in more recently installed/re-installed/updated apps expires on Oct 23 19:09:31 2017 GMT.
 
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Oh please. Half the time, when you call apple support, they tell you to restore your computer to a previous version or to reinstall OS X.

Real troubleshooting is something very few people do well, let alone communicate well. I doubt there's any company or organization of any size where that info is consistently found quickly, and quickly converted into a non-drastic fix or workaround, and the help desk monkeys informed of what to tell the users.
 
Rebooting and resigning in to the Mac App Store solved many of my Mac App Store failure to open problems - but by no means all. 1Password and a number of others were fixed, but the following refuse to open with the "damaged and can't be opened" dialog displayed: Weathersnoop 3, WiFi Explorer, Disk Doctor, Screenium 3, and Just Press Record.
 
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I've been having the same issue since weds, I was worried it was just a problem with my application. I've reinstalled and relogged a hundred times and nothing is working. I'm truly desperate, I use Photoshop Elements 9 everyday for my animations without it I'm royally screwed. Good thing I learned my lesson and bought a Physical copy, awaiting delivery. Thanks a lot Apple.
 

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Tried it but my Billings app from 2012 still doesn't work. Hopefully the discontinued apps will also be fixed.
Same for me with Billings 3.7.8 However for me it doesn't even give me a corruption warning. It just bounces once in the dock and then does nothing.
 
I started a thread on forum about my sudden inability to open CoD 4 before I saw this thread.
 
Billings 3 is still not working on 10.10.5, even after a sign out, delete, reboot and re-install. Frustrating!
Same for me. I have 5 years of business data here that I need to get access too ASAP. Contacted the company and they said it was Apple and unless I update to the new subscription service they could not fix the problem. Any luck on your end?
 
Same for me. I have 5 years of business data here that I need to get access too ASAP. Contacted the company and they said it was Apple and unless I update to the new subscription service they could not fix the problem. Any luck on your end?

Not yet. I keep rebooting and re-installing hoping that Billings will work, but no luck so far.

I suspected that sooner or later I would have to succumb to the Billings Pro subscription or find a replacement, but not without an OS upgrade to temper the pain. Fingers crossed that Apple will resolve this themselves.
 
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