A long shot...
Try changing the device type for your Nomad Zen Jukebox NX to 1 instead of the 2 in the PDT.xml file ( Search for "NOMAD Jukebox Zen NX" in the PDT.xml-file. Default path is "C:\Program Files\J River\Media Center 11\Data\Default Resources")
HTH John
this didn't work unfortunately.
The player needs to report that it supports playlists. It's up to the Creative driver to do this through WMDM.
You can drag-n-drop playlists to the action window or pick them in options to send them to a player.
my biggest issue is that this worked perfectly in 11.0
In upgrading to 11.1 I wouldn't expect things to break that previously worked. I now have two options.
1) Downgrade to 11.0 and lose out on all the other enhancements in 11.1 and future releases of MC
2) Buy a new MP3 player
Neither of these are ideal and really if you insist on using WMDM why not allow the option of using MC11.0 style transfers if it doesn't work properly?