My first hunch is that your Descriptors are not quite right. The folks over at 
[email protected] should be able to help you. I think that might be the 
first place to start with your question.

Brian


On Dec 2, 2014, at 6:32 AM, Philip Lukidis <[email protected]> wrote:
> I hope that this is the right list to which I should send this question (if 
> not, please let me know where I should attempt to address this).  My issue is 
> with respect to VDCAssistant on 10.10.x.  It opens at least one of our USB 
> Audio Class 2.0 devices (via IOUSBDeviceInterface182::USBDeviceOpenSeize), 
> thus preventing our frameworks from doing the same.  At this point I'm not 
> sure if any of our other devices are affected in this way.  Our USB Audio 
> Class 2.0 device has absolutely nothing to do with the onboard camera- 
> indeed, this even happens on a MacMini which has no camera, as well as a 
> Macbook which does have a camera.  This does not happen on 10.9.x on either 
> Mac.
> This is a serious problem for us- is there anyone from Apple who could 
> comment on why this is happening, and if there is something we could do to 
> have VDCAssistant cease to open our audio device(s)?  I have pasted the 
> syslog message below (blanking out our USB VID/PID).
> 

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