You can have both in the "Curious Labs" folder.

One folder for P4 (or PPP)
and
one folder for P5.

Then just setup Poser 5 to "see" your P4 runtime folder.

Holiday cheers,
from dr geep
;=]

Remember ... "With Poser, all things are possible, and poseable!"

cheers,

dr geep ... :o]

edited 10/5/2019