Alan,
You definitely will want to back up your process files before
uninstalling -- these include .l4p, .l4t, .lka, and .lks files.
Additionally if your databases are important it would be a good idea to
archive them, this process is talked about
here.
Other than that you should be able to uninstall lookout 6.0 using
Add/Remove Programs and going to National Instruments Software and
choosing Lookout from the list. I would then suggest rebooting
your computer and then installing 6.0.2.
Please let us know if you have further questions.
Doug M
Applications Engineer
National Instruments
For those unfamiliar with NBC's The Office, my icon is NOT a picture of me 🙂