By the way, my original GoPro Hero still works fine. I just pulled it out of the closet, charged the battery for a couple of hours, turned it on, and plugged the USB into the side.
VOILA! Computer recognized it immediately.
Did it several times and the computer recognizes it every time.
The "3"? No such luck. In fact, it's quit doing anything at all now. Red light won't come on when plugged into the USB port or charger, computer doesn't recognize it, Power button does absolutely nothing. It seems to have bricked itself.
That's too bad. Even though I bought it a year ago, this weekend was the first time I've used it.