A free compatibility list for the macOS operating system https://www.macoscompatible.com/compatibility/ 1 2019-11-27T16:19:38+00:00 QuarkXPress 2015 3/compatibility/report/quarkxpress-2015/ Quark Quark Applications/Graphics macOS 10.15 Catalina 2019-11-27T16:19:38+00:00 Anonymous macOS 10.15 Catalina 4 You need to run the following 3 commands in terminal to disable Catalina malware check: xattr -d com.apple.quarantine /Applications/QuarkXPress\ 2015/Required\ Components/*.qrc xattr -d com.apple.quarantine /Applications/QuarkXPress\ 2015/Xtensions/*.xnt xattr -d com.apple.quarantine /Applications/QuarkXPress\ 2015/libQuarkPDF.dylib https://www.gnu.org/licenses/lgpl-3.0.html