Well, for starters, drag and drop doesn't work at all in Jemplode, so it must be copy and paste. Your version number *seems* correct, is it the latest Jar from the inzyme site?

You should, in theory, be able to right click on a playlist, select copy, then right click on a parent playlist on the other device and select paste. It should just work.

Maybe it only works on playlists and you're trying to do it in the soup?