Channels wont configure Zaptel 1.4.6

When ever i run ztcfg -vvvv i get the following…

Zaptel Version: 1.4.6
Echo Canceller: MG2
Configuration

Channel map:

Channel 01: FXS Kewlstart (Default) (Slaves: 01)
Channel 02: FXS Kewlstart (Default) (Slaves: 02)
Channel 03: FXS Kewlstart (Default) (Slaves: 03)
Channel 04: FXS Kewlstart (Default) (Slaves: 04)

4 channels to configure.

My Zaptel.conf

fxsks=1,2,3,4

loadzone=uk
defaultzone=uk

What am i missing to configure my channels?

Thanks
Dan

PBXCLI> zap restart
[Nov 21 14:51:28] WARNING[10264]: chan_zap.c:903 zt_open: Unable to specify channel 1: Device or resource busy
[Nov 21 14:51:28] ERROR[10264]: chan_zap.c:7173 mkintf: Unable to open channel 1: Device or resource busy
here = 0, tmp->channel = 1, channel = 1
[Nov 21 14:51:28] ERROR[10264]: chan_zap.c:10480 build_channels: Unable to register channel ‘1,2,3,4’
[Nov 21 14:51:28] WARNING[10264]: chan_zap.c:9777 zap_restart: Reload channels from zap config failed!
PBX
CLI>