Some issues have been reported in a Citrix environment while attempting to create a PDF.
The Phantom Creator package (PDF Printer) is a stand-alone package that was created to assist in Citrix environments. In a Citrix environment, Phantom Creator would be installed on the Host OS while PhantomPDF would be installed (without the Creator option) on each VM. While Phantom Creator isn't licensed separately, neither can it be used independently of PhantomPDF 10.x.
That means that it can't be added to Reader to create a virtual printer.
If you are in need of a PDF Printer for non-PhantomPDF users, I recommend using Microsoft's Print to PDF virtual printer. While not as robust as PhantomPDF's Creator, it will help with basic PDF creation.
Please view a separate KB article to install Foxit PhantomPDF without the Creator option for a Citrix individual VM.