The cm11a is made by X10, but you may have
gotten it from another source. Active Home
Software is for the cm11a Serial Port
Controller. Active Home Pro [here] is for
the cm15a USB Controller.
You may want to go to the X10 Forums
[separate from the AHP forums] for more
messages related to the cm11a.
Easiest way there is go to any X10 web page
and pick support. Forums.