Did this exactly as listed. Got through 90% of #7 and then this came up in a pop-up
Custom Action (time) Operation 'Install Driver' has finished with result 0x80070643
Clicked ok and it was followed by
Custom Action (time) Operation 'remove Driver' has finished with result 0x80070643
Clicked ok and it immediately proceeded to "go backwards" and remove the desktop shortcut and failed to load the software.
All I get is message saying:
"Found New Hardware" Zune Bus Root Bus Enumerator
The wizard then says that there was a problem installing this hardware...an error ocurred during the installation of the device.