Okay. The Daz installer will not let you install V4 to an external runtime. I keep all V4 in an external runtime. So, outsmart the installer. I copied just my Poser 6 .exe into the external runtime, installed V.4.1 no problem. Also, I agree about Daz Studio. They are doing everything to push their own software. They are going to end up out of business, IMHO.