duplicated pid

[Mable Syrup]

So, trying to download "in search of professor moriarty": (http://www.bbc.co.uk/programmes/b0080rwc)

get_iplayer --get --type=radio --pid b0080rwc

and get error message
"INFO: Sherlock Holmes - The Adventure of the Veiled Lodger - Sherlock Holmes - The Adventure of the Veiled Lodger (b0080rwc) Already in history (/home/administrator/.get_iplayer/download_history) - use --force to override"

i.e., a different, but related, programme.  Added the --force and get
"INFO: Trying flashaacstd1 mode to record radio: Sherlock Holmes - In Search of Professor Moriarty"

and the right programme comes down the pipe.

Has anyone seen duplicated pids before - I thought they were unique?