They work just fine once you install them correctly. The only problem you might have is if, after you've used them once and an .rsr from the .obj has been created and becomes corrupted. In that case you can just delete the .rsr and poser will build a new one. Anyway, the best thing about them is that Posette can actually sit! In fact, she can kneel with no breakage. A very big thank you to ISO!