Hi, we are trying to certify a driver package for a usb audio device. But with the latest HCK we have a failure with the "General Audio Test : KS properties\KSPROPSETID_Pin\KSPROPERTY_PIN_NAME\Passing large buffer". It tries to get the pin name of the PIN:0 but it fails. Indeed when I check the pin names with KSSTUDIO.EXE the request fails on the pin0 but succeeds on the other pins, on every usbaudio device I had tested. Is it a normal behavior of USBAUDIO.SYS? Did we miss something inside the INF or the USB Descriptor? thanks.