Will QuarkXPress run on OS X Mountain Lion?

Apple announced today that tomorrow Mac OS X v10.8 Mountain Lion will be released.

If you are planning to upgrade to Mountain Lion and use QuarkXPress, please read this; it’s Quark’s official statement on QuarkXPress’ compatibility with Mountain Lion:

QuarkXPress and OS X Mountain Lion

With the release of OS X 10.8 (Mountain Lion) on Jul 25, Apple introduced a new security feature called Gatekeeper, which helps you to keep your computer free of malicious software that you downlaoded. Gatekeeper allows only software from trusted sources to be installed: Apps from the Mac App Store, and apps from registered software vendors who have built their installers with a Gatekeeper signature.

Because QuarkXPress 9.3 was released before Apple introduced this new feature, Gatekeeper (at its default settings) does not allow the installer for QuarkXPress 9.3 (or earlier) to launch if you try to install from a downloaded Installer.

However, there are two ways to install QuarkXPress 9.3 (or earlier) under Mountain Lion:

  • Control+click/right-click the installer icon and choose Open.
  • Open System Preferences, click Security and Privacy, display the General tab, and then click Anywhere under Allow applications downloaded from. (After installation, be sure to return this setting to its default state.)

While Quark has been testing with Mountain Lion for several months, the team is currently wrapping up testing. So in a few weeks, Quark will release a free update for QuarkXPress 9 that is compatible with Gatekeeper and has been extensively tested on the release version of Mountain Lion. That version of QuarkXPress will be the first version officially supported on Mountain Lion.

Until this upcoming version is released, Quark recommends that you use QuarkXPress 9.3 on Mac OS X Leopard, Snow Leopard, or Lion.