I found some unusual programming in its regulator hoses. Each hose segment had 3 morphs which were dummy because they had zero amount of deltas. Each corresponded in name to one of its x/y/zRotates. Each rotate was slaved to the corresponding dummy morph in ALL of that hose's segments (and also to a master channel in the scuba set's BODY). That meant that operating one of those dummy morphs changed all the corresponding rotates in that hose, by the same amount. I wonder if all that mass of intersecting "slave-chains" and slaving-in-a-circle that was making something in Poser run out of space? I have Poser 4.0.3 without PPP.