Did you select a playlist on the 2nd device before you pasted? I don't think you can paste without selecting a target playlist first. That's the only thing I can think of offhand -- I don't know why else it wouldn't work. Can you run jemplode from the commandline? (java -jar jemplode.jar) and see if an error prints out on the console after you attempt the paste and post it up here if you get anything?