Isn't that funny, in all the years I used B4 I don't recall it ever crashing.

 I did try B5,5.5 and 6 though didn't see any usefull features (for me anyway) and they all ran much slower. I think I'm right in saying, the bryce code is the limiting factor in its development and I would think DAZ would prefer people to move to Carrara.

It is the boolean king, and bambam's fine work is testament to that, though it can be limiting at smaller scales

Things change, try a different software, a different medium - as long as you can express what you need to - the tools are of no consiquence.