Spindle/machine stops

I am a newbie here, hello everyone.
I just bought and set-up my new Masuter3. After reading and reading I have programmed and cut a simple design, my name, Alan and a hummingbird on a piece of MDF that measures 7"x3.5". The bird is on the left side, name on the right. It does a wonderful job cutting the bird, moves over to start the “A”, makes a few passes, then just stops. Spindle stops turning and moving.
I looked at my programming and it looks good. But remember, I am a rookie and not 100% sure what I’d be looking for.
All help would be appreciated. Links to videos especially.
TIA
Alan