Quark just released the El Capitan Update for QuarkXPress 2015.

Just run Auto Updater inside QuarkXPress or use the following link to download the El Capitan Update for QuarkXPress 2015:
http://www.quark.com/Support/Downloads/Details.aspx?fid=322

And Quark is getting quicker when it comes to adding support for new versions of OS X:

Quark has released an update to QuarkXPress 8, bringing it to version 8.5.1 for Mac OS X and Windows. One improvement it brings is the ability to tell QuarkXPress where you want it to look for a Preferences file. On Sep 30, 2015, Apple released OS X El Capitan, also know as OS X 10.11. Unfortunately as El Capitan handles some mouse movements differently than OS X versions before, QuarkXPress 10 and the current version of QuarkXPress 2015 crash once you move the mouse cursor over a palette. So please do not use QuarkXPress on El Capitan for production yet. Oct 2015 Release (11.2) – Support for OS X El Capitan QuarkXPress 2016 22 QuarkXPress 2016 Release 12.0 (May 2016) – Convert AI/EPS/PDF to editable objects, copy Illustrator, InDesign, MS Office as editable objects; create HTML5 Publications, multi-color gradients, OpenType Stylistic Sets, Eyedropper.

QuarkXPress, The Most Flexible Software for Print and Digital Design.

• When Apple released Mountain Lion, it Quark 19 days to release an officially supported version of QuarkXPress (which was QuarkXPress 9.3.1)
• When Apple released Mavericks, it took Quark 17 days to release an officially supported version of QuarkXPress (which were QuarkXPress 9.5.4 and 10.0.1)
• When Apple released Yosemite, it took Quark 20 days to release an officially supported version of QuarkXPress (which was QuarkXPress 10.5)

• Now, with El Capitan, it took Quark just 9 days to release an officially supported version of QuarkXPress (which is QuarkXPress 2015)

Still, when upgrading your OS X to El Capitan please remember to create yourself a backdoor beforehand:
http://www.planetquark.com/2015/09/28/how-to-create-yourself-a-backdoor-to-downgrade-os-x/

Users of QuarkXPress 10, 9, 8 and earlier:
Quark will not support any version prior to QuarkXPress 2015 on El Capitan.
Though not supported QuarkXPress 8 and 9 seem to “work” ok on El Capitan (with some flaws). QuarkXPress 10 crashes badly on El Capitan. The engineering team will look into the crash issues of QuarkXPress 10 on El Capitan to determine whether anything can be done about it, however we might not be able to, so this is not a promise. I will probably be able to comment on this in maybe 5-6 weeks from now.

Both an engineer and a layout artist, Matthias bridges the gap between technology and people. Before joining Quark in 1997, Matthias pioneered print, Web, and multimedia products for multiple German publishing companies. He is an active participant in design and publishing communities and represented Quark in the Ghent PDF Workgroup.

From 1997 until 2019 Matthias played a central role in shaping Quark’s desktop, mobile and enterprise software. From February 2014 until January 2019 he headed Quark’s Desktop Publishing business unit; and was therefore responsible for QuarkXPress.

Matthias does not work for Quark anymore. If you want to connect with him, please visit his LinkedIn profile on https://www.linkedin.com/in/mguenther/

Title: QuarkXPress 2015 crashes while quitting.

Applies to: QuarkXPress 2015 while using Font Suitcase Fusion 6/FontExplorer on El Capitan only.

Quarkxpress 9 El Capitan

Background:
If you are Font Suitcase Fusion 6/FontExplorer on your machine to manage fonts while using QuarkXPress 2015, you might end up getting crash issues with QuarkXPress. The issue is originally not with QuarkXPress 2015 but Extensis's product which is Suitcase Fusion 6 or FontExplorer only on El Capitan as acknowledged by the manufacturer. The issue has been recognised by Extensis and they are working on a fix apart from providing a workaround to their customers.
For more information, please follow our forum link:
QuarkXPress 2015 crashes while quitting

Solution:
Disable Font Suitcase Fusion 6. Please contact the manufacturer to get a complete solution on the issue.

Quarkxpress For El Capitan 10.11