This might help: http://savannah.nongnu.org/forum/forum.php?forum_id=4723
(found via Google)
Stephan
>
> Hi.
>
> I'm trying to use an Atmel AVR programmer dongle on win32 with libusb.
> It came packaged with the gcc (winavr) compiler.
>
> The libusb0.dll file with that one was 0.1.10.1, and it gave the
> following errors:
>
> > LIBUSB: error: usb_registry_get_num_busses(): getting hardware id failed
> > found 3 busses
> > avrdude: usbdev_open(): did not find any USB device "usb"
>
> I just downloaded the newest, 0.1.12.1, and now the error is:
>
> avrdude: usbdev_open(): did not find any USB device "usb"
>
> This device works fine with the manufacturer's drivers/software. It
> also works great with whatever version of libusb I have on my freebsd
> 6.2 system. The device apparently works fine with people who don't
> have a compaq laptop with libusb0.dll 0.1.10.1.
>
> The usb drivers on my laptop are all standard winxpsp2 drivers looking
> in the device manager. I clicked the "install-filter.exe" in the
> libusb download and rebooted, but it didn't appear to do anything.
>
> "testlibusb-win32.exe" gives:
> DLL version: 0.1.12.1
> Driver version: -1.-1.-1.-1
> bus/device idVendor/idProduct
>
>
> Thanks,
> Steve
>
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