The sync error being discussed in this thread has nothing much to do with what you do, whether you modify playlists or upload tunes or whatever. As far as I can tell it is only to do with:

1. Running Windows 98SE.
2. Doing a reasonably long synchronise (at least once in a Windows session).

I believe the problem is due to power management changes in 98SE. I've got a version of emplode that reduces the number of times the error happens but doesn't actually completely eliminate it. If you want to try it it's available at http://www2.empeg.com/upgrades/test/interim/private/emplode-0.84.2.zip.

If this doesn't help then try turning off every single power management feature you can find.

I've been investigating the USB driver to find out exactly what needs to be changed but I haven't found anything conclusive yet.

--
Mike Crowe
I may not be speaking on behalf of empeg above :-)