Quote - How do you tell which figure is being loaded.

V4.1 comes with morphs in it already, while V4.2 needs you to load them before being able to inject a character morph.

If you load V4.1 into your scene and can inject a charactrer morph like you did before, then V4.1 is working as she always has.  However, if you find that when you load V4.1 and go to inject a character addon  and Poser starts asking for a bunch of files, you know that V4.1 has been over written and it's V4.2 that actually loaded. In which case before you apply furture character addons you will have to go and inject the head and body morphs for the figure first.

You won't break anything by trying it.  The worse that will happen is that you will have to CTRL ALT DEL and close Poser  if it gets hung up.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi