Cookie "damaged" on two computers

Guy

Within about 6 hours, Cookie stopped working on both my MacPro and my MacBook Air. This is the pop-up message I received both times:

'Cookie.app' is damaged and can't be opened. Delete 'Cookie.app' and download it again from the App Store.

These two computers are not networked with each other (no sharing, separate externals) but share the same router/internet connection. I only use the MBA about twice a month.

What could cause an app to get nuked on two different computers at essentially the same time?

From MacBook Air Console log:

11/12/15 3:02:23 PM com.apple.launchd.peruser.501[119]  ([0x0-0x18018].com.sweetpproductions.Cookie [169]) Exited with exit code 173

From Mac Pro Console log:

11/13/15 9:10:00 AM	com.apple.launchd.peruser.502[298]	([0x0-0x24024].com.sweetpproductions.Cookie[391]) Exited with exit code: 173


Mac OS X 10.6.8
Cookie 4.3.3```

Note: The versions I'm running should have nothing to do with a simultaneous app failure on two separate machines, unless there was a security hole that was closed by later versions. If this was the result of an attack, I'm interested in finding out what I should look for, or whether anyone has an idea of what else could possibly cause this. I've run virus and malware utilities, repaired permissions and deleted App-related p-lists. 

I cannot (for my own reasons) update the OS, but can update Cookie. However, updating is not a recommendation I'm looking for. I will update. I'm looking for possible reasons why, because this is a very odd thing that has never happened to me before. Any ideas?

SweetP

that sounds like its related to this issue:
http://www.macrumors.com/2015/11/12/mac-app-store-apps-damaged-expired-receipts-issue/

the fix is posted here:
http://www.imore.com/getting-app-damaged-and-cant-be-opened-errors-your-mac-heres-fix

here are the steps to fix (from the article):
How to fix a damaged app that won't open on the Mac

Reboot your Mac.
Open your Applications folder either by using the Finder or searching in Spotlight.
Find the damaged app and delete it.
Enter your Mac user password to authorize deletion, if requested.
Launch the Mac App Store.
Make sure you're logged in. (You may need to re-enter your password even if you were previously logged in.)
Go to the app you just deleted, either in your Purchased tab or by searching for it.
Click on Install to re-download it.

Guy

Thank you very much, Russell, the delete and re-install method worked for Cookie, and one other app that (after I posted) did the same thing.

A more recent article on iMore explains what happened and includes an update:

Here's What's Happening