Question: were you trying to build / upload a lot of playlists at the same time? I am talking about an entire disk worth? If so, I have run into this a few times. For some reason, emplode has a limitation with the number of playlists that can be created on the player during one sync. It will then crash after that point.

If not, and you are just trying to upload one playlist, then I would look at the source playlist.

Used fidsift without success? What happened???

The errors on console are not really a problem. It just means that you are checking if the filesystems are mounted.