I use GPO and JABB with Finale 2008 and Kontakt2. Everything works fine, including the GPO drum library.
However........
The JABB drum kits (GM, Brush, & Fusion) notate correctly in Finale, but produce no sound, either during entry or playback.

I won't swear to it, but I think the same problem occurred under Finale 2006 and Kontakt.

The Finale Forum can't come up with an answer, and Native Instruments just doesn't answer. Hopefully someone here can help.

Thanks.