Weird blinking exterior lighting

["SPC" <petitpetit@xxxxxxx>]

I'm a relative newbie to X10 -- I bought a house with it and so far, so
good, except for one thing. I turned on my exterior lights using one of
eight buttons on the wall switch. The one button controls two lights in
my yard. Tonight, I turn on the lights and one lamp lights fine, the
other blinks three times quickly and goes dark. Any ideas for
troubleshooting this?