Unable to launch fake-stereo

 Trying to convert a mono file
 with
 ecasound -i filea -etf:3 -o fileb

 **************************************************************************
*        ecasound v2.7.0 (C) 1997-2009 Kai Vehmanen and others    (B
**************************************************************************
(eca-session) Set debug level to: 319
(eca-session) Session created
(audioio-db-server) constructor
(eca-chainsetup) Rtcaps detected.
(eca-chainsetup-parser) Interpreting object option "-f:s16_le,2,44100,i".
(eca-chainsetup-parser) Changed active format to (bits/channels/srate/interleave): s16_le/2/44100/i
(eca-chainsetup) sample rate change, chainsetup untitled-chainsetup to rate 44100.
(eca-chainsetup-parser) Interpreting object option "-z:mixmode,avg".
(eca-static-object-maps) register_chain_operator_objects()
(eca-static-object-maps) register_controller_objects()
(eca-chainsetup-parser) Interpreting global option "-i:05_Slow_Hands.mp3".
(eca-chainsetup-parser) Interpreting global option "-etf:3".
(eca-chainsetup-parser) Interpreting global option "-o:new.05_Slow_Hands.mp3".
(eca-chain) constructor: CHAIN
(eca-chainsetup) Chain "default" created.
(eca-chainsetup-parser) Interpreting object option "-i:05_Slow_Hands.mp3".
(eca-static-object-maps) register_audio_io_rt_objects()
(eca-static-object-maps) register_audio_io_nonrt_objects()
(eca-static-object-maps) All libsndfile supported extensions:
... aiff,au,avr,caf,flac,htk,iff,mat,mat,mpc,oga,paf,pvf,raw,rf64,sd2,sds,sf,voc,w64,wav,wav,wav,wve,xi,
(eca-object-factory) Object "-i:05_Slow_Hands.mp3" created, type "Mp3 stream". Has 2 parameter(s) (variable: no).
(eca-chainsetup-parser) adding file "05_Slow_Hands.mp3".
(audioio) set srate, aobj "Mp3 stream:05_Slow_Hands.mp3" to 44100.
(audioio-db-client) DB-client created for 05_Slow_Hands.mp3.
(audioio) set srate, aobj "DB => Mp3 stream:uninitialized" to 44100.
(audioio) set srate, aobj "Mp3 stream:05_Slow_Hands.mp3" to 44100.
(audioio) set srate, aobj "Mp3 stream:05_Slow_Hands.mp3" to 44100.
(eca-chainsetup) Assigning file to chains: default
(eca-chainsetup-parser) Interpreting object option "-etf:3".
(eca-object-factory) Creating chain operator "Fake stereo"
(eca-object-factory) Setting parameters: delay-time-msec = 3.000
(eca-chainsetup) Adding chainop to chain default.
(audiofx) Setting samplerate to 44100 for object Fake stereo. Old value 384000.
(eca-chainsetup-parser) Interpreting object option "-o:new.05_Slow_Hands.mp3".
(eca-object-factory) Object "-o:new.05_Slow_Hands.mp3" created, type "Mp3 stream". Has 2 parameter(s) (variable: no).
(eca-chainsetup-parser) adding file "new.05_Slow_Hands.mp3".
(audioio) set srate, aobj "Mp3 stream:new.05_Slow_Hands.mp3" to 44100.
(audioio-db-client) DB-client created for new.05_Slow_Hands.mp3.
(audioio) set srate, aobj "DB => Mp3 stream:uninitialized" to 44100.
(audioio) set srate, aobj "Mp3 stream:new.05_Slow_Hands.mp3" to 44100.
(audioio) set srate, aobj "Mp3 stream:new.05_Slow_Hands.mp3" to 44100.
(eca-chainsetup) Assigning file to chains: default
(eca-chainsetup) Chainsetup "untitled-chainsetup"
(eca-control) ECA_CONTROL constructor
(eca-session) Connecting chainsetup
(eca-chainsetup) bmode-selection case-5
(eca-chainsetup) "nonrt" buffering mode selected.
(eca-chainsetup) Set buffering parameters to: 
--cut--
buffersize: 1024
raised_priority: 0
sched_priority: 50
double buffering: 0
double buffer size: 100000
max buffers: 1
--cut--
(eca-chainsetup) Switching to direct mode.
(audioio-db-client) destructor 05_Slow_Hands.mp3.
(audioio-db-server) unregister_client Mp3 stream.
(audioio-db-server) unregister_client failed (2)
(audioio-db-client) destructor new.05_Slow_Hands.mp3.
(audioio-db-server) unregister_client Mp3 stream.
(audioio-db-server) unregister_client failed (2)
(audioio-mp3) Found mp3 header at offset 25882
(audioio-mp3) Found mp3 header at offset 25886
(audioio-mp3) Total file size (bytes): 4446555.00
(audioio-mp3) Bitrate (bits/s): 192000.00
(audioio-mp3) Sampling frequncy (Hz): 44100.00
(audioio) set srate, aobj "Mp3 stream:05_Slow_Hands.mp3" to 44100.
(audioio-mp3) Total length (frames): 7092
(audioio-mp3) Total length (seconds): 186
(audioio-mp3) Pcm per mp3 frames: 1152
(eca-chainsetup) Opened input "05_Slow_Hands.mp3", mode "read". Format: s16_le, channels 2, srate 44100, interleaved (locked params).
(eca-chainsetup) sample rate change, chainsetup untitled-chainsetup to rate 44100.
(audioio) set srate, aobj "Mp3 stream:05_Slow_Hands.mp3" to 44100.
(audioio) set srate, aobj "Mp3 stream:new.05_Slow_Hands.mp3" to 44100.
(eca-chain) sample rate change, chain 'default' object 'Fake stereo' rate 44100.
(audiofx) Setting samplerate to 44100 for object Fake stereo. Old value 44100.
(eca-chainsetup) Opened output "new.05_Slow_Hands.mp3", mode "write". Format: s16_le, channels 2, srate 44100, interleaved (locked params).
(eca-session) Chainsetup connected
- [ Connected chainsetup: "untitled-chainsetup"(B ] ------------------------
- [ Controller/Starting batch processing(B ] -------------------------------
(eca-engine) ECA_ENGINE constructor
(eca-engine) Prefill loops: 7 (blocksize 1024).
(audiofx) Init w/ samplerate 44100 for object Fake stereo.
(eca-chain) Initialized chain default with 1 chainops and 0 gcontrollers. Sbuf points to 167939360.
(eca-control-base) Engine thread started with pid: 28131
- [ Engine - Driver start(B ] ----------------------------------------------
(eca-engine) Request start
(audioio-mp3) mpg123 --stereo -r %s -b0 -s -k 0 %f
(audioio-forked-stream) Fork child-for-read: 'mpg123 --stereo -r 44100 -b0 -s -k 0 %f'
(audioio-mp3) Starting to encode new.05_Slow_Hands.mp3 with lame.
(audioio-forked-stream) Fork child-for-write: '/usr/local/bin/lame -b 128 -s 44.10 -x -S - %f'
(eca-engine) starting engine operation!
(audioio-mp3) Attempt to write after child process has terminated.
(eca-engine) output error - stop
(eca-engine) engine error, exit
(eca-engine) stopping engine operation!
(audioio-forked-stream) Sending SIGKILL to child process related to: 05_Slow_Hands.mp3
(audioio-forked-stream) Child process exit ok: 05_Slow_Hands.mp3
(eca-engine) Signaling stop
(eca-engine) Signaling exit
(eca-engine) WARNING: An output object has raised an error! Possible causes: Out of disk space, permission denied, unable to launch external
... applications needed in processing, etc.
(eca-engine) Engine state when finishing: 4
(eca-control-base) Engine thread 28131 will exit.

- [ Controller/Batch processing finished (-3)(B ] --------------------------
(eca-control-base) Waiting for engine thread to exit.
(eca-control-base) pthread_join returned: 0
(eca-control-base) Engine thread has exited succesfully.
(eca-engine) ECA_ENGINE destructor
- [ Engine exiting(B ] -----------------------------------------------------
(eca-control-objects) Disconnecting chainsetup:  "untitled-chainsetup".
(eca-chainsetup) Closing chainsetup "untitled-chainsetup"
(eca-chainsetup) Closing audio device/file "05_Slow_Hands.mp3".
(eca-chainsetup) Closing audio device/file "new.05_Slow_Hands.mp3".
(audioio-mp3) Cleaning child process pid=28135.
(audioio-forked-stream) Sending SIGKILL to child process related to: new.05_Slow_Hands.mp3
(audioio-forked-stream) Problems in terminating child process:No child processes
(audioio-forked-stream) Sending SIGTERM to child process: new.05_Slow_Hands.mp3
(eca-session) Chainsetup disconnected
(eca-control) ECA_CONTROL destructor
(eca-session) ECA_SESSION destructor-in
(eca-chainsetup) ECA_CHAINSETUP destructor-in
(eca-chainsetup) Deleting chain "default".
(eca-chain) CHAIN destructor!
(eca-chainsetup) Deleting audio object "05_Slow_Hands.mp3".
(eca-chainsetup) Deleting audio object "new.05_Slow_Hands.mp3".
(audioio-db-server) destructor
(audioio-db-server) destructor-out
(eca-chainsetup) ECA_CHAINSETUP destructor-out
(eca-session) ECA_SESSION destructor-out

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