HandleInvoke, Sanity failed. no string method in invoke packet

[David Earle]

Getting a lot of errors when trying to download flashhd1, flashhd2
seems to work OK

Here is the error message

pi at rascal ~ $ get_iplayer --get 2632
get_iplayer 2.83-ppa15, 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.

Matches:
2632:   Top Gear: Series 20 - Episode 1, BBC Two, Cars &
Motors,Entertainment,Factual,Popular,Review Shows,TV, default,

INFO: 1 Matching Programmes
INFO: Checking existence of default version
INFO: flashhd1,flashhd2,flashvhigh1,flashvhigh2,flashhigh1,flashhigh2,flashstd1,flashstd2,flashlow1,flashlow2
modes will be tried for version default
INFO: Trying flashhd1 mode to record tv: Top Gear: Series 20 - Episode 1
INFO: File name prefix = Top_Gear-s20e01-Episode_1
RTMPDump v2.4-n78-git3a1e20c-ppa8~wheezy
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
INFO: Connected...
Starting download at: 0.000 kB
INFO: Metadata:
INFO:   duration              3771.14
INFO:   moovPosition          32.00
INFO:   width                 1280.00
INFO:   height                720.00
INFO:   videocodecid          avc1
INFO:   audiocodecid          mp4a
INFO:   avcprofile            100.00
INFO:   avclevel              41.00
INFO:   aacaot                2.00
INFO:   videoframerate        25.00
INFO:   audiosamplerate       24000.00
INFO:   audiochannels         2.00
INFO: trackinfo:
INFO:   length                94276000.00
INFO:   timescale             25000.00
INFO:   language              eng
INFO: sampledescription:
INFO:   sampletype            avc1
INFO:   length                90507264.00
INFO:   timescale             24000.00
INFO:   language              eng
INFO: sampledescription:
INFO:   sampletype            mp4a
366.509 kB / 0.76 sec (0.0%)
WARNING: HandleInvoke, Sanity failed. no string method in invoke packet
WARNING: HandleInvoke, Sanity failed. no string method in invoke packet
WARNING: HandleInvoke, Sanity failed. no string method in invoke packet
366.509 kB / 0.76 sec (0.0%)
Download may be incomplete (downloaded about 0.00%), try resuming
INFO: Command exit code 2 (raw code = 11)
WARNING: Failed to stream file
/home/pi/public/Top_Gear-s20e01-Episode_1.partial.mp4.flv via RTMP
INFO: skipping flashhd1 mode

Don't remember seeing that error before, I've just upgraded to
get_iplayer 2.83-ppa15

Thanks