Forget what I said about it not working on the Mac. It works fine from there also. It just does not do the whole installing drivers kind of thing that the pc does.
Try reflowing the chip. Mine did not work the first time. I got the unknown usb device message. I hit all the pins again and it has worked great ever since.
Compared to my other projects this weekend this was a breeze. If I'm going to do much more smd stuff or IEM repairs I may have to invest in a stereo microscope.