Not sure how to tell you this, but V4 is only compatable with Poser, that was the program she was designed for and it's Posers native formats that she comes in. Every other program that can use her has to use converter software to load/import her, this is because they need to change the Parametric rig into something that program can handle. In the case of DS that means a basic weight map rig that mimics Parametric rigging, and no I'm not talking about DS4 as the conversion gets even more complicated with it.

infinity10, I believe you are refering to PowerLoader, it allows you to load and pre-inject morph packs for EXP enabled figures (Gen4 and SubDragon), problem with it is that it's always been slow and a bit of a RAM hog. You can actually load V4 into a scene, INJect the required morphs, apply a character and textures, pose and half dress her in less time than it takes PowerLoader to just load her and her morphs.

EDIT and if like me you had the CR2 exporter with DS2 & DS3 you could export a new CR2 that would load in a hell of a lot faster than her EXP CR2.