your right you can't turn knob anti clockwise, it only turns slightly clockwise then springs back. press in and turn or just turn, this should reset.
then make sure programmer is not set to demand heating, and follow other instructions.
press in and ignite and hold for 20secs then slowly release.
did it today and thought, right last time, (that was after 25 attempts) and it stayed lit.
if not could be you need a thermocouple or reset switch. do a search for your specific model.
dw
January 2011