if you already uninstalled P5 then change the 5 to 6 in the install because Poser use the same path on all versions unless you changed it. I do this when I purchase new items from daz some do not give a P6 option so when the screen come up I just delete the 5 and put 6
do this any time it ask for P5
IMHO you should have kept P4 and P5 installed since you can link to their runtimes from P6

You might as well PAY attention, because you can't afford FREE speech