an463

I have just installed RO10.3 using CKAN here, and as I try to play through the career, I'm having an issue. The Aerobee sustainer will ignite, but after a few seconds it will cut out, saying that I'm out of ignitions. My sounding rocket is built exactly like Scott Manley's, but even still, it cuts out. Is this an issue with Test Flight? Or another mod?