One thing you need to do is to change a Python script to make it work with Poser 12. In the Runtime where you have PE look in the following location to find the file to update. "Runtime:Libraries:Character:Evolution:Figures:Character" There you will find a file named "load_current_version.py" find the line that says "elif versionNr == 11" and change it to "elif versionNr >=11" that way when you load a character it will load the correct base figure based on which version of Poser you are using. Since Poser 12 is closer to 11 then 10 the change will make sure you get the best figure with the proper rigging.

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13