> I don't know about the "while changing version" part, but yes, we > changed the polarity of the mask gerbers a while back.
Note also that the current pcb has a checkbox to invert the polarity of all the layers, so you can always print everything twice and pick and choose which polarities you need. At least, it's *supposed* to work that way. If anyone has needed to do that yet, they haven't reported back to us if it worked or not.
