I log in to agent interface of vicidial => the phone ring => i pick up and i hear 'you are current only person in conference'. and asterisk CLI show:
-- Executing [h@default:1] DeadAGI("SIP/2004-09768050", "agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----16---------------") in new stack
-- AGI Script agi://127.0.0.1:4577/call_log--HVcauses ... ---------- completed, returning 0
== Parsing '/etc/asterisk/manager.conf': Found
== Parsing '/etc/asterisk/manager_additional.conf': Found
== Parsing '/etc/asterisk/manager_custom.conf': Found
== Manager 'sendcron' logged on from 127.0.0.1
-- Executing [55558600051@default:1] MeetMeAdmin("Local/55558600051@default-0fba,2", "8600051|K") in new stack
-- Executing [55558600051@default:2] Hangup("Local/55558600051@default-0fba,2", "") in new stack
== Spawn extension (default, 55558600051, 2) exited non-zero on 'Local/55558600051@default-0fba,2'
-- Executing [h@default:1] DeadAGI("Local/55558600051@default-0fba,2", "agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----16---------------") in new stack
-- AGI Script agi://127.0.0.1:4577/call_log--HVcauses ... ---------- completed, returning 0
== Manager 'sendcron' logged off from 127.0.0.1
== Manager 'sendcron' logged off from 127.0.0.1
== Parsing '/etc/asterisk/manager.conf': Found
== Parsing '/etc/asterisk/manager_additional.conf': Found
== Parsing '/etc/asterisk/manager_custom.conf': Found
== Manager 'sendcron' logged on from 127.0.0.1
-- Executing [8600051@default:1] MeetMe("SIP/2004-09768050", "8600051|F") in new stack
== Parsing '/etc/asterisk/meetme.conf': Found
== Parsing '/etc/asterisk/meetme_additional.conf': Found
-- Created MeetMe conference 1023 for conference '8600051'
-- <SIP/2004-09768050> Playing 'conf-onlyperson' (language 'en')
== Manager 'sendcron' logged off from 127.0.0.1
could you help me, please !

my system:
Os: ubuntu 8.10
Asterisk: 1.4.18
Vicidial: 2.0.5
Thank in advance any your help !