Craig Hockenberry, a partner at the development firm IconFactory, pointed out a similar issue in October 2013, and filed a bug report with Apple.
In a Thursday tweet, Haddad noted that the new certificate will expire on Oct. 23, 2017. "Hopefully, Apple fixes whatever caching issues by then," he said.
Haddad's advice for afflicted Mac users was to first reboot their machine, before going doing the delete-reinstall dance. "After a reboot OS X will grab a new receipt and that likely requires at least one log-in to your iTunes account," he said.
Apple did not immediately reply to questions about the snafu.
Sign up for CIO Asia eNewsletters.