OS X 10.9.5 Gatekeeper Codesign issues

Oct 15, 2014 | Migration & Upgrading, OS X Tweeks, Security, Troubleshooting | 38 comments

With OS X 10.9.5 Apple made some significant changes to the way Gatekeeper operates, which effectively broke many pre-Maverick (10.9.x) apps, preventing them from running. Here’s a solution.