Now I have a similar problem.
A pdf file, opened in Acrobat, shows the correct royal purple along the spine of a book cover.
When I open the pdf file in a picture box, the spine appears dark blue. I checked that the setting Preferences -> Color Manager was set to QuarkXPress 7.0 Default and even tried various other settings in that window, but still what should be purple remains blue.
Why purple in Acrobat, but not in Quark? What else do I need to check? (Version 7.1)
Thanks so much.