You don't get this problem with earlier versions, I have checked this by taking a scene which has crashed in B6 opening it in B5 and then quite easily added a heap more figures, models and volumetric mats without any crashes. I think this is a  programing issue as it has only  appeared since the arrival of B6. In my opinion Daz would be better to focus on making 6 more stable than adding anything more such as has been suggested in other threads. Another thing I'm not keen on is making Bryce so dependent on Daz Studio,even tho I use both,I prefer programs to  be Stand alone so that I have control over what gets installed on my system.
Anyway thats my little gripe for the day.

Cheers
GG

WHO said Kiwi's can't Fly ?????