I have 4.6 on my oldest PC, but recently installed 4.15 on another one...:crying:
On my latest PC (a sibling of Mike's new one), I haven't installed anything DAZ-related yet. I have an older version of DAZ listed in my account (a beta) but can't download it.
Anyway, it's not that important for me as I do little with DAZ, but I'm sorry to hear about your troubles.