Yes, I installed V4 to DAZ Studio long before I even got Carrara. I just tried to reinstall Victoria and picked Poser instead of DAZ Studio like you suggested. But the installer says that I need to install Victoria in the same folder as the executable Poser file. I don't have Poser installed so I'm not sure what to do now.

Shouldn't Carrara show up as an option when I'm being prompted what program to install Victoria for? Does it have anything to do with Carrara sharing my DAZ Studio content folder perhaps? Like I said, when I launched Carrara for the first time, it detected my existing DAZ content folder and didn't seem to create it's own content library.