Hi, I'm Mr.med. Welcome to JustAnswer. I'm reviewing your question now, and will post back with your reply ASAP.
I'm sorry about the issue,
let me know if you need further assistance
If you still cannot install the QuarkPress software, I recommend you try the steps below :• Open Finder and click on Library folder• From within Library, click on Preferences folder* Remove these 3 plist files to the trash• com.apple.desktop.plist• com.apple.finder.plist• com.apple.LaunchServices.plist• Remove the Caches folder from LibraryOnce you have done this, please reboot your Mac. Try to install the software with Mac Installer again and let me know if this helps.
has everything worked out, do you still need help please?