I just came across this and I thought this may well help people if upgrading or moving to later operating systems in their Citrix farms. Or just like me updating your Mac and wondering why it doesn’t work.

I suddenly realised I couldn’t print from my Mac and came across these two articles… its takes some playing with to get perfect but the printers do then at least get mapped! It doesn’t always mean they print though 🙁 But this may just be my printer

http://www.poppelgaard.com/mac-client-printer-mapping-fix-for-citrix-xendesktopxenapp-7-6

http://blog.ollischer.com/citrix-receiver-for-mac-session-printer-mapping-issues-printers-dont-show-or-wont-get-mapped