Download with pid always says "INFO: 0 matching programmes"

I did read the docs but couldn't find an answer to this.
Whenever I use the pid to download programmes, I always see this and I think I've entered the wrong pid:
"INFO: 0 matching programmes"

But then it finds the programme and downloads it fine.

>get_iplayer --pid b09qjl7d --info
get_iplayer 3.12.0, Copyright (C) 2008-2010 Phil Lewis
 This program comes with ABSOLUTELY NO WARRANTY; for details use --warranty.
 This is free software, and you are welcome to redistribute it under certain
 conditions; use --conditions for details.


brand:          The Truth About...
categories:     Factual,Science & Nature,Health & Wellbeing,Documentaries
category:       Factual
channel:        BBC One

INFO: 0 matching programmes
I believe this is because it isn't in the cache, not that it isn't on iPlayer.

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