After downloading the .zip file, are you extracting it and then finding the .dmg file? You should mount the .dmg by double clicking, then you can run the installer by double clicking that link. Once installed, you won't see an icon for Flash Player in your applications folder, instead you can verify it by going into Safari and navigating to this page:
Chris — Thanks for your response. First, I now appear to have
installed Flash Player successfully. But second, that doesn't seem to
be the (direct) result of your advice!
The file I kept downloading from Adobe was already unzipped — i.e.,
its label started '10.1.85.3' and ended 'mac.dmg', so it was ready to
use; so, at each attempt to install, I double-clicked and followed
the easy instructions until I got the message 'installation
succeeded' and then clicked 'done'. I'd then re-open Safari, which
took a long time, suggesting something was loading — but then I'd
discover that Flash Player was NOT in fact available (and not in the
Anyway, just now I thought I'd go through the whole process again, in
order to be able to report to you exact details of what I was doing:
I was wondering whether it was the very last stages, where you have
to make sure you quit the browser, then start it again, that were the
problem. As far as I'm aware, I did exactly what I've done a dozen
times before, but this time, when the process was complete and I
looked in the -plug-ins' list, there were two new entries with
'Flash' in their titles. I've just tried listening to a live
programme on radio site and all went smoothly. So it does look as
though my problem is solved.
Thanks for your attention — perhaps you had some influence that I'm
not aware of!