+1 to SAMC. I had the same issue where a safety feature would constantly kick in. Make sure you open the valve very slowly and open the air damn slowly as well. This will ensure a good flame and not the typicalbig flameout at the beginning. I struggled with this with my camp chef and once I got the process down, I haven't had a problem. Keep us posted!
"It is sheer folly to be taken by the hand and led down the path of better brewing by someone who says that they know it all. No, it is your experience that counts most. It is your experience that will always lead you to more questions."