This happens in case the PDF preference setting in QuarkXPress is set export files as Postscript instead of direct PDF.

Solution: In this case, you need to make changes to the QuarkXPress preferences. Please follow the steps given below:

On Windows:

1. Open QuarkXPress.

2. Go to the Edit menu > Preferences.

3. Go to Application>PDF>PDF Workflow>select "Direct to PDF" option and click Ok.

Now, when you try to export your project as a PDF, it will create a PDF instead of a PS file.

On Mac:

1. Open QuarkXPress.

2. Go to QuarkXPress>Preferences.

3. Click on Application>PDF>PDF workflow>Select "Direct to PDF" option and click Ok.

Now, try to export as a PDF.