When I flipped the breaker switch to ON, I heard a "POP", and the the breaker was tripped. I'm pretty sure I followed the Lutron-provided instructions correctly. I've studied them over and over, and can't see any problem. The lights are recessed xenon, and I've been assured that they'll work with the Maestro switches. They're 50W each, for a total of 100W... which is more than the stated minimum 60W of the Maestro system. Each component (switch boxes and light fixtures) is grounded, and I'm sure all the connections are tightly affixed. Perhaps the breaker switch itself is bad? (It was left by the previous owner of my house, and untested. Looks fine though.) Would any of you possibly be able to see a problem in my wiring?