Norton Utilities crashes my system

This is my first time using this.  I cannot find a forum to help with Utilities, so I am requesting help here, since Norton does not seem to have a help desk for this.  When I run the registry scan tool  on my XP Pro operating system, it crashes the system during the deep scan portion of the scan.  So I have never been able to complete a scan and have the tool fix the many errors that have been found up to that point.  What can I do?