I should mention that my usual trick to upgrade is to power up the empeg, and leave it running.
The upgrader will reboot the player, and the upgrade will work perfectly.
(And it's not just a windows 2000 problem, I'm running Win98... =)

Jazz
(List 112, Mk2 12 gig #40. Mk1 4 gig #30. Mk3 1.6 16v)