Our Technical Support Portal has changed as we have moved to a new platform. Please visit support.quark.com to access your support tickets or to log a new ticket with us. All our existing customers should look for an email from email@example.com for activation of their New Support Account. If you face any difficulty in accessing the new portal, please write to us at firstname.lastname@example.org
Have a look at QuarkXPress 8 through 2016 how it differs from QuarkXPress 2017. You can see that MacOS lists QuarkXPress 2017 as an “application” (and not a folder) and also doesn’t show the “uncollapse” icon:
If the XTension (plug-in) you are installing has an installer, then you do not need to worry about this.
If you need to manually install the XTension, then you need to be aware that QuarkXPress 2017 will load third party XTensions from the following two locations:
a) ~/Library/Application Support/Quark/QuarkXPress 2017/XTensions (so “Library” in your User folder)
b) /Library/Application Support/Quark/QuarkXPress 2017/XTensions (the main “Library” folder on your Macintosh folder)