Applies to- QuarkXPress 8,9,10 and 2015.
QuarkXPress documents are not displayed with project previews instead QuarkXPress logo is displayed.
Check the Quicklook generator version installed by navigating to Mac HDD//Library//Quicklook/QuarkXPressqlgenerator.
Update the Quicklook generator version by contacting support http://support.quark.com to get the updated qlgenerator for QuarkXPress.
Note: The most recent version of qlgenerator is version 5.