I don't have anything plugged in other than the BASIC stamp, a battery, and the USB cable. Both the Board and my laptop (a mac) are turned on, but nothing happens. I don't even get an error message, or the option to choose what to send it to. When I try to go into download from the menu, it says that it can't locate anything. I've tried everything I can, doing things in a different order, different USB ports, refreshing, but nothing.