I do just like xantor. Eventhough I almost never use my PPP anymore, I still install everything (except P5-specific stuff like shaders and dynamic clothes) into my Poser 4 Runtime. That way I can access it from both P4 and P5, with the linked runtime.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.