Your two messages don't fit any of the formats that my CBus implementation uses. The first one appears to be an MMI message about light status (the "07" in characters 3-4 mean that it is an MMI message and the "38" in characters 5-6 mean that it relates to lights) but the first two characters in it ("73") are not what I would have expected (they imply that a negative number of light statuses are being reported). The second one also appears to be an MMI message but is not the length that I would have expected (it is too short).
But all is not lost: just switch your light on and off and see how your two messages change. If they change, then you can simply hard code your Prontoscript accordingly. If they don't change, then you are not actually receiving feedback.
ps. You are much more likely to get replies to your questions if you a) show appreciation for previous replies and b) react to the various suggestions that people make.
