asterisk users - Apr 2004 - AgentCallBackLogin agent-incorrect play right away

I've been working on setting up a few queues and agents for use in our 
upcoming call center. Agents can log in and customers can call in and be 
routed properly, but I've run into one strange issue. When an agent 
dials 98 to login the "agent-incorrect" file is played, then the agent
can login as normal. Searching the archives I found this issue brought 
up in Feb '04 :

http://lists.digium.com/pipermail/asterisk-users/2004-February/037907.html

It looks like he couldn't find an answer then, so I'll try asking. The 
relevant part of my configs:

agents.conf ===========[agents]
autologoff=10
ackcall=yes
wrapuptime=5000

musiconhold => none

;english

group = 1
agent => 8001,1111,Agent One
agent => 8002,1111,Agent Two

queues.conf =======[english]
music=        default
announce=    helpdesk-whisper-english
strategy=    leastrecent
timeout=    30
retry=        5
maxlen=        0

member => Agent/@1

extensions.conf =========[ext-acd]
; Login and wait for calls while offhook.  When calls arrive, you will hear
; a beeping tone and the caller will join automatically
exten => 98,1,Answer
exten => 98,2,SetMusicOnHold(none)
exten => 98,3,Wait,1
exten => 98,4,AgentCallbackLogin(${CALLERIDNUM}@sip)
exten => 98,5,Hangup

end of configs ===========
Any hints on what causes that agent-incorrect to be played before an 
agent can log in?

Thanks,

-Paul

-- 
Paul Concepcion
Manitoba Community Connections