While working on new connector nubs for the SC magrid, I produced this beautiful error:
Also while testing the USB geiger counter, a high voltage discharge vaporized the counter tube producing this beautiful error:
Spark fun is sending me a new one. Thank you!
Prometheus Fusion Perfection 
btw: how much stronger could you yank your superconductors by using liquid helium?
and by this i mean cranking up the current ;)
should be in the spec sheet somewhere?
Did your computer get fried too? Assuming the USB was connected?
computer is fine fortunately!
happened while disconnected.