LifeCam VX-6000 Hardware Install Problem

Get the following installation error when attaching the MS VX-6000 webcam to
an XP SP3 pc:

There is a problem installing the hardware:
USB20 Camera
An error occurred during the installation of the device.
The data is invalid

I have uninstalled the software, and hardware, and reinstalled both again
with no change. Have updated the driver. No change there either. Tried
different USB ports. No change.

The MS Hardware Support pages have no help. I successfully installed the
camera on 2 other XP PCs just fine.

Thanks.