Hi,
you can download the plugs from the realflow website, it is a bit stupid in there webpage, i can't remember the adress and i don't have the 8.5 plugs so you have to do the steps :
go to demo area : http://realflow.com/n\_try.php
register ( it is for a demo download, or if you already have a login use it) then you will receive by mail the adress of the download web page where there is all the plugs
cheers
Olivier