I've got the same.
libusb-win32-filter-bin-0.1.12.1 - installed, but when I start Test Program from libusb there is no brick on the list, only my usb muse.
I disconnected mouse, started Test Program again and there is empty list.
Brick was in firmware update mode (silent ticking was hearable).
But I always got "NXT not found. Is it properly plugged in via USB?"
At the end I done update using LEGO software (by USB).