I've looked all through the Q&As but no where Did I see it resolved. After using my Lightroom for the past two days all of a sudden today the Adjustment Brush just stops dropping the pins. I've exited out of Lightroom completely and come back and sometimes it will drop a pin and sometimes it won't-even after it starts working it will do it once or twice and then quits again. I've tried all the answers I've found on the forum and nothing is working. I'm fed up with this.