how to use label?

Bayonne2-1.1.0 is working now. But when using label, it can not work well.
Here is the script:
::start
sleep 60
hangup
exit

^hangup
	slog "^hangup"
	exit
	
^1	
	slog "^1"
	goto ::start

Here is the console info:
starting 0.3.1 on x86 w32; timeslots=32
soundcard/0: session starting
soundcard/0: state=initial, event=100, seq=0
soundcard/0: state=idle, event=100, seq=0
binding ivrscript...
compiled mytest; 6 steps
C:\Program Files\GNU Telephony\Bayonne IVRScrisoundcard msgport starting
pt1: directory missing
1 applications compiled
driver(s) started; 1 timeslot(s) used
soundcard/0: state=idle, event=105, seq=1
soundcard/0: state=pickup, event=100, seq=1
soundcard/0: state=pickup, event=400, seq=2
soundcard/0: state=run, event=100, seq=2
soundcard/0: mytest.scr(1): script start missing
soundcard/0: state=sleep, event=100, seq=2
soundcard/0: state=sleep, event=709, seq=3
soundcard/0: state=run, event=100, seq=3
soundcard/0: ^1
soundcard/0: state=run, event=400, seq=4
soundcard/0: ^hangup
soundcard/0: state=hangup, event=100, seq=4
soundcard/0: state=hangup, event=400, seq=5
soundcard/0: state=idle, event=100, seq=5