ERROR[18590]: chan_zap.c build_channels

Dear All professional
I got a error when i reload the chan_zap.so

server information
centos 4.4 kernel version 2.6.9-42
asterisk core 1.4.4
zaptel 1.4.1
lib 1.4.0
addon 1.4.1
ALL installed successfully and run genzaptelconf
T1Card = OpenVox D110P

/etc/zaptel.conf
span=1,1,1,esf,b8zs
bchan=1-23
dchan=24

/etc/asterisk/zapata.conf
[channels]
language=en
switchtype=national
rxwink=300
callerid=asreceived
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
echotraining=400
rxgain=0.0
txgain=0.0
immediate=no
busydetect=yes
busycount=1
context=from-pstn
signalling=pri_cpe
group=1
channel => 1-23

when i reload the chan_zap.so

-- Reloading module 'chan_zap.so' (Zapata Telephony)

== Parsing ‘/etc/asterisk/zapata.conf’: Found
[Apr 30 18:10:24] WARNING[21280]: chan_zap.c:11090 process_zap: Ignoring switchtype
[Apr 30 18:10:24] WARNING[21280]: chan_zap.c:11090 process_zap: Ignoring rxwink
[Apr 30 18:10:24] WARNING[21280]: chan_zap.c:11090 process_zap: Ignoring signalling
[Apr 30 18:10:24] ERROR[21280]: chan_zap.c:10442 build_channels: Unable to reconfigure channel ‘1-23’
[Apr 30 18:10:24] WARNING[21280]: chan_zap.c:11406 reload: Reload of chan_zap.so is unsuccessful!

whats wrong with that?

Was this ever resolved? I get the same error