Strange Problem with HA09 Controller

I have a very odd issue with an HA09 controller. I have it set up to directly control my bedroom bedside lamps. For some reason if my outside lights are on the controller fails when sending a signal to the Intermatic HA03C Lamp module that controls the bedside lights, but when the outside lights are off it works as expected. I cannot think of any reason the outside lights, which are controlled by an HA04C and two HA06C switches, which are controlled by Vera directly only, would affect the HA09 controller.

Any ideas?