To the best of my knowledge, the encoding was only recently put in, so those of us who purchased before a certain date have a model that will work without the P4 baby. That is what I am understanding from all of this. However, since the encoding is something that is required on the babies, it would mean, as I see it, that we have to have the baby. What I do not know is if the baby is required with the encoded version and you do not have it, then what do you do? I had too much unnecessary files in my library, so I made a decision to get rid of all the P4 stuff as I never used it. I don't want to have to re-install Poser and all the SRs just to get the baby. Does the baby need to be installed to work? Otherwise, what good would an encoding be if it doesn't require recognition of the original mesh. I saw Chris' message, but that still doesn't answer my questions or what happens to Studio users who never own Poser. If your version is working without the P4 baby, did you purchase before or after the encoding? Thanks, Cris