janestarz | Machines not working

And suddenly, for no apparant reason, the lockmachine despises velvet. The left needle just spits out the thread it has, due to some upper or lower thingy, and I'm stuck with a seam that's quite ugly and a loose thread. I've read the manual, I've checked all the tensions on pieces of rest-fabric, and it was fine. I twiddled the tightnesses a bit but in the end it looked good.
Only it still spits out the velvet.
Soooo, I'm trying not to throw it out of the window and remain breathing calmly.

And ofcourse this happens on the day my lovely innate technician is away for the entire fucking day.