No I didn't. As often Patreon links are behind paywalls, and/or aren't the latest versions.
Also, my experience has been that F95 files are very reliable.
Still, thanks for responding, and for the suggestion. I did look and saw in this case the Patreon file is free and is the latest.
However, by then I'd already started re-dowlading the F95 file (see next)
Sooo... oddest thing:
I installed Winrar, re-downloaded HH (from nopy), uncompressed with Winar all ok.
For completeness, re-tested uncompressing this copy of teh file with 7zip and that also worked all ok.
Now (after all the downloads and previous attempt), have no idea as to why so many failures?
Either way, problem's gone. So thanks again for responding. Even if only to prompt me to try one more time