I am getting the following assertion when attempting to record a G.729 call: freeswitch: src/switch_channel.c:832: switch_channel_get_variable_dup: Assertion `channel != ((void *)0)' failed. The system has a Sangoma D100 card installed. The call is established using the G.729 codec, and after playing some prompts, I am attempting to record an answer: freeswitch@192.168.9.151:5000@internal> show codecs type,name,ikey codec,ADPCM (IMA),mod_spandsp codec,G.711 alaw,CORE_PCM_MODULE codec,G.711 ulaw,CORE_PCM_MODULE codec,G.722,mod_spandsp codec,G.726 16k,mod_spandsp codec,G.726 16k (AAL2),mod_spandsp codec,G.726 24k,mod_spandsp codec,G.726 24k (AAL2),mod_spandsp codec,G.726 32k,mod_spandsp codec,G.726 32k (AAL2),mod_spandsp codec,G.726 40k,mod_spandsp codec,G.726 40k (AAL2),mod_spandsp codec,GSM,mod_spandsp codec,LPC-10,mod_spandsp codec,PROXY PASS-THROUGH,CORE_PCM_MODULE codec,PROXY VIDEO PASS-THROUGH,CORE_PCM_MODULE codec,RAW Signed Linear (16 bit),CORE_PCM_MODULE codec,Sangoma G729,mod_sangoma_codec 18 total. . . . 2013-05-24 12:33:31.071446 [ALERT] switch_core_session.c:2739 sofia/crossfonetrunk/52764439 receive message [APPLICATION_EXEC_COMPLETE] 2013-05-24 12:33:31.071446 [ALERT] switch_ivr.c:650 sofia/crossfonetrunk/52764439 receive message [AUDIO_SYNC] 2013-05-24 12:33:31.111446 [ALERT] switch_core_session.c:2724 sofia/crossfonetrunk/52764439 receive message [APPLICATION_EXEC] 2013-05-24 12:33:31.111446 [INFO] mod_native_file.c:94 Opening File [/mnt/TEMP/beep-7.G729] 8000hz 2013-05-24 12:33:31.231447 [ALERT] switch_core_session.c:2739 sofia/crossfonetrunk/52764439 receive message [APPLICATION_EXEC_COMPLETE] 2013-05-24 12:33:31.231447 [ALERT] switch_ivr.c:650 sofia/crossfonetrunk/52764439 receive message [AUDIO_SYNC] 2013-05-24 12:33:31.271451 [ALERT] switch_core_session.c:2724 sofia/crossfonetrunk/52764439 receive message [APPLICATION_EXEC] 2013-05-24 12:33:31.291450 [ALERT] switch_core_io.c:446 sofia/crossfonetrunk/52764439 receive message [TRANSCODING_NECESSARY] freeswitch@192.168.9.151:5000@internal> freeswitch: src/switch_channel.c:832: switch_channel_get_variable_dup: Assertion `channel != ((void *)0)' failed. FreeSwitch dies after this. Note that this does not happen if I restrict everything to G711 (ULAW). Any thoughts? -- Guillermo Ruiz Camauer