Quote - Okay, I don't know how I did this, but I'm hoping one of you fine people can help me out.

I'm running DAZ 3, and recently, whenever I install a new Reality softbox, another incidence of Victoria and a cube primitive loads along with the softbox.  I must have paired these somehow in a recent scene, but I can't quite figure out how to unpair them.  Thoughts?

Possible you saved over the Reality Extra Softbox with your minimal scene? If so strip out the extras and save over it again - or reinstall/replace the Reality items from the installer. Thus restoring it to what you expect.