Don't know if this is a JJ2+ bug, but anyway:

When I play in Single Player, and defeat the boss in Loose Screws, Marinated Rabbit, Hare Scare and Bad Pitt, the game does not move on to the next level/episode (or in the case of Devan, the high score list), but crashes with the following message:

"Jazz Jackrabbit 2 has performed a Divide by Zero at address 6D20AE34h" (or 6740AE34h)

Any help with this? It doesn't occur with the Queen, Turtle and Bubba bosses.