Here is the code. It will not toggle the pin. I have to be missing something painfully obvious. I am hoping somebody will spot it immediately and while making me feel dumb, save me another 17 days of head banging. It started on a circuit board but I have moved it to a breadboard with nothing but 2 "AA" batteries powering the PIC and checking the pins with a multi-meter. Thanks.

#CONFIG
__config _INTRC_OSC_NOCLKOUT & _WDT_OFF & _MCLRE_OFF & _IOSCFS_4MHZ & _CP_OFF & _PWRTE_OFF & _IOSCFS_4MHZ & _BOR_OFF

#ENDCONFIG


include "alldigital.pbp"
trisio.5 = 0
trisio.0 = 0

DEFINE OSC 4
do
'serout2 gpio.5, 396, ["M"]
high 0
pause 1000
low 0
pause 1000
loop
end