Do you have your machine set up where there is a lot of light? I am not familiar with your machine, but too much light can play havoc with some of the new machines. My Babylock Serenade sits in front of a southern exposure window, and I keep the curtain drawn because direct sunlight messes up computerized machines. But I have occasionally opened the curtain on a bright but cloudy day, and if it's too bright, my machine will stop because the computer thinks the bobbin is low on thread. And I have found that when the bobbin really IS low on thread, and the machine stops because of it, if I open the door which accesses the bobbin, the light coming in fools the machine and I can finish off the bobbin. I like to finish off the bobbin, because there is enough thread still on there to sew a seam as long as a pant leg! I know mine is not the only brand of machine which is affected by light, so see if your problem is solved by dimming the light a bit. Good luck to you!