Running Windows 7 64-bit and the USB driver install is failing. Well, the setup program runs ok and reboots, but when I connect to a USB console, it installs the Console driver ok but fails on "Cisco Virtual Comm Port00". I've tried this on multiple machines as administrator and still no joy.
Just came across this post after trying to figure out as to why this was failing. Followed your guide and worked perfectly. I have been banging my head on this all day. Thank you for the well detailed information.