Help with External memory playlist


I need help with creating a playlist on the external memory please. In MTP mode, I drag the mp3 files into a folder called ‘rock’ on the sd card. Then I rt click on all the required mp3 files in the folder and select - create playlist. All appears well until I disconnect the Fuze. The folder ‘rock’ always get renamed to ‘new folder’ and the playlist gets renamed to ‘new playlist’. The songs are still there and the ‘new playlist’ works, but I need several folders on the sd card and they all get renamed ‘new folder’

I use the same method for the internal memory and it works just fine.

Any help is greatly appreciated.