If you are unable to install the device driver for your ColorMunki Smile the first thing you will want to do is use the link here and try installing X-Rite Device Services (XRD) which is used along with the driver: http://www.xrite.com/product_overview.aspx?ID=1509&Action=support&SoftwareID=1406 After this has installed and the system is rebooted, plug the device in and you should now be able to install the device driver when prompted. If you continue having issues you will need to manually install it by following these instructions:
Open Device Manager and plug the instrument into the System, you would see the ColorMunki Lite appear in the device manager tree.
Right click on the “ColorMunki Lite” and select Update Driver Software.
Select Browse My Computer for this Software > Let me Pick from the List > X-Rite Devices and next.
Here you should have a list of instruments, click on ColorMunki Lite or i1Display and click Next to continue the installation.