I just had a go at doing a booklean of some .3ds type I imported and it wouldn't boolean out of either  a terrain set solid positive or a cube but I successfully booleaned 2 primatives. So Bryce only booleans primatives ?

 

Once in a while I look around,
I see a sound
and try to write it down
Sometimes they come out very soft
Tinkling light sound
The Sun comes up again