hmm.
Well - try using this:
http://www.hitsquad.com/smm/programs/MIDI_Monitor/make sure everything is routed properly! Like through the right channel of your interface - for example, mine is hooked up to port 8 of my Midex 8, and i need to specify that in the prefs for the sysex program.
The Machinedrum base channel is at the default - I don't even think this makes a difference.
Then I use midimonitor to monitor the output of the sysex librarian to make sure everything is going as planned. However, I can tell that the OS loads cause the LED's eventually begin to light up.