Windows 7 installation that's been fine for months and months!
Not been able to download anything the last couple of days.
The following is what's shown in a typical attempt at using the Web PVR for the next episode in a series that has downloaded all the previous episode without problem.
No settings ... or anything else ... have been changed since it was last working just fine.
Using the >4GB version of RTMPDump ... as I have for over a year. That's never been a problem.

=============================
492: Doctor Foster - Episode 5, BBC One, default

INFO: 1 Matching Programmes
INFO: Checking existence of default version
INFO: flashhd1,flashhd2 modes will be tried for version default
INFO: Trying flashhd1 mode to record tv: Doctor Foster - 5. Episode 5

INFO: File name prefix = Doctor_Foster_-_5._Episode_5_b06h3mhl_default                
RTMPDump v2.4-78-g26c4637-4GB
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
INFO: Connected...
Starting download at: 0.000 kB
Download complete
WARNING: Failed to stream file C:\Users\David\Videos\Get_iPlayer\Doctor_Foster_-_5._Episode_5_b06h3mhl_default.partial.mp4.flv via RTMP
INFO: skipping flashhd1 mode
INFO: Trying flashhd2 mode to record tv: Doctor Foster - 5. Episode 5

INFO: File name prefix = Doctor_Foster_-_5._Episode_5_b06h3mhl_default                
RTMPDump v2.4-78-g26c4637-4GB
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
INFO: Connected...
ERROR: Closing connection: NetStream.Failed
INFO: Command exit code 1 (raw code = 256)
WARNING: Failed to stream file C:\Users\David\Videos\Get_iPlayer\Doctor_Foster_-_5._Episode_5_b06h3mhl_default.partial.mp4.flv via RTMP
INFO: skipping flashhd2 mode
ERROR: Failed to record 'Doctor Foster - 5. Episode 5 (b06h3mhl)'
WARNING: PVR Run: _Doctor_Foster_name_tv: 1 download failure(s)
=============================

Any thoughts, anyone?

tia

It's entirely possible that programme wasn't yet available.  Sometimes you have to wait more than 90 mins.  Regardless of that, rtmpdump isn't completely reliable.  If it isn't working, set your recording mode to hlshd and avoid rtmpdump altogether.

i'm having problems dl latest ep of Dr Who.  Thought it might be a general problem but tried to dl ep of Baby Jake and that worked.  Am now trying Dr Who with "hlshd" method recommended above.  But how does it work? And if RTMP dump works for one then why not the other?

Sorry Newb...

So hlshd method worked fine, and RTMP dump worked in default mode. So all good from my end thanks for the advice Dinky. :)