Apple's Security Cert blunder
I've just seen that Apple has accidentally (the mind boggles) let its Security Certificate lapse on the App Store, which is leading to loads of problems with existing apps.
I'm getting the message that all my purchased / downloaded App Store apps are now broken, and must be re-downloaded ... however, deleting doesn't work: it's still showing as available to 'Open' in the App Store. And when I click 'Open' I get the 'damaged' error again.
Has anyone had any success reinstalling apps after this monumental Apple cockup?
iMac, OS X El Capitan (10.11.1)