Quark has released an important update forQuarkXPress 9, its flagship publishing suite. The v9.3.1 release adds support for OS X Mountain Lion, which was launched last month. As a part of the upgrade, QuarkXPress has been made compatible with Mountain Lion's Gatekeeper technology, which normally blocks uncertified apps from being installed. The v9.3.1 code should now install properly under Gatekeeper's default security level.
