no you shouldnt have to do anything besides install new version. thats how i do it anyways.

please follow the uninstall / reinstall guide from stormjumper.

winxp - http://club.cdfreaks.com/1711788-post1.html

vista - http://club.cdfreaks.com/1800187-post1.html

edit// also dont forget these steps

Empty the Recycle Bin and for the last two steps DO in order
1st.... Do a Registry Clean up using "REGSEEKER" or what ever you use
2nd... Defrag your whole system
NOW Reboot and re-install DVDFab (NOTE) DO NOT USE the old download file of DVDFab that you have had on your computer "COULD be Corrupt RE-DOWNLOAD a new copy of the file to use