The DC8 is a power strip with no wireless control. The X10 wireless interface uses radio waves to control the modules. The Icecap electronic MH ballasts have been reported to interfer with the control signals, making use of X10 possibly unreliable.
Scott,
I see in your profile that you're using an Icecap MH ballast. Did I miss that or was I still partying from the holidays? I will accept back the control module if you'd like. Please PM me.