Thanks for that link S.Prime.  I found somewhere else as well to try test downloads as well as that one you posted. And guess what...worked fine, downloaded perfectly.
And Patrick, thanks for your idea, I wasn't even aware that you could get something like that. I tried 2 from Play store and both of them failed to do what I wanted them to do. May try some more.
My only conclusion is that its some issue or non interaction with the web sites in question, they don't like me viewing with a tablet, mobile fine. Tablet no.
I will keep experimenting...........

 Its MP4 clips from a legitimate "adult" site.  So nothing illegal.

Hi all
Yet another noob with a new christmas toy. Hope to learn a few things while I'm here.
Happy new year to you all.

rob

P.S. just off to post my first question.....