Many thanks for this feedback. I tried this solution but, in this instance, it did not initially work. However, I did find reference elsewhere to repeating this procedure several times. I also reached out to Sony who helped me check some possible issues. It was thought it might be a firewall or VPN related problem. However, the software generally downloaded fine, it was just the 'Agree & Proceed' request that I could not get past. One possibility is that Norton Private Browser was blocking the download - but this only happened once over several downloads, so I suspect this was probably not the issue. What may have finally got me past 'Agree & Proceed' in response to the request to accept the privacy policy was repeatedly clicking on 'Agree & Proceed' in quick succession. When I did this everything started up correctly on both my desktop and laptop.
So not a definitive answer to what was going wrong: it could be a firewall type issue; it could be something else in my set up; it could be that for some reason the 'Agree & Proceed' instruction was not getting from my system to Sony correctly; it could just have been some other anomaly. In any event, I'm, thankfully, up and running again.
I use Imaging Edge a fair bit and find it pretty user friendly.
