I had been having problems with using my x-10 controller on my power compact ballast. Well I found a solution for any of the other people out there that might be having the same problem. Here is the link on how to modify your modules to operate with a power compact ballast and maybe other ballast types you may have problems with.
http://www.neptunesys.com/hardwareFAQ.htm
http://www.neptunesys.com/hardwareFAQ.htm