The fact that there is a "IOUSBDeviceUserClient" nub attached to your
IOUSBDevice indicates that there is a user client attached to the
device. More than likely this is what's preventing your from opening
it.
I assume that the ioreg was when your device was plugged in but YOUR
user space app/driver was not running? Are you sure Classic is NOT
running (Although I don't think Classic will attempt to grab
composite devices if it was running).
Also, for your codeless kext, you don't need to up the IOProbeScore.
--
Fernando Urbina
USB Technology Team
Apple Computer, Inc.
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