Since no one else has, I'll bite, and ask myself, when you have the VA11A video capture (camera) working, open Device Manager and then open the Device and see what driver it is using. I can't see how it's possible for the VA11A video capture device to work with the driver for the CM15A device driver as they are quite different. I have tried the "swap" you mention and have not been able to replicate the same results myself, but I am running Vista Home Premium, which is why I am curious as to what drivers your computer seems to be using.
I've tried every device driver, combination of device drivers and dang near everything else, as I am sure many other's have tried as well, and have yet to make any progess on it.
Hey, if I'm not mistaken(and I'm not), I have an email from X10 Tech Support from weeks past saying they would have a "FIX" or an update for us by the 1st of May, anyone else hear anything different, or more on this?
CAUTION: Do NOT, I say again, DO NOT hold your breathe for this to happen. If it does, I'll give them a pat on the back and say thanks, but, past experience says not to bet the farm on it.