asterisk users - Nov 2003 - Unable to specify channel 2: Device or resource busy

Hi folks,
 
I installed my Asterisk Developer's Kit (TDM) "successfully" on a
old
Dell machine and ending up with some problems. 
 
Running my start script .
 
rmmod audio
rmmod wcfxo
rmmod zaptel
modprobe wcfxo
sleep 3
ztcfg -vvv
sleep 1
asterisk -vvvvgc
 
. ends in following problem:
 
Channel map:
Channel 01: FXS Kewlstart (Default) (Slaves: 01)
Channel 02: FXO Kewlstart (Default) (Slaves: 02)
2 channels configured.
 
ZT_CHANCONFIG failed on channel 2: No such device or address (6)