Not to worry- it seems like some kind of bug-artifact that comes from certain Poser files. I've had the same thing happen with some of my Poser file imports. Some Poser files seem to contain these Spheres, which in Poser are invisible, but are there sort of like Body Handles or other posing mechanisms, and the initial Alpha version of Daz Studio is making them visible. The same kind of thing happens with Poser files that I have Z-Tooned using Ockham's Python script. DS makes the normally invisible "control balls" - visible. It's an Alpha bug and something DAZ can address in their Poser file import code. It's just one of a number of things people will likely discover- and then DAZ can adress as an "issue"- and fix. That's why its an Alpha release and why DAZ encourages people to find and report these bugs- so they can squash them!