Norton Utilities 14 -- missing files unins000.msg, map.dat, values.dat, keys.dat

I want to do an uninstall/reinstall of my Utilities 14. Using Windows XP (SP3) Add/Remove Programs tool I get the following message: "Messages file '*\Norton Utilities 14\unins000.msg' is missing. Please correct the problem or obtain a new copy of the program."  I've redownloaded the software but when I try to reinstall, I get a message that says I can't install the software until I've uninstalled the existing program. While working in Safe Mode, I eventually got the following error message:  "Norton Utilities is missing core application files:  '*\Data\map.dat, *\Data\values.dat, and *\Data\keys.dat.'  Please reinstall."  I contacted Symantec whose tech was going to do a remote fix, but the original problem--spontaneous shutdown and restart after logging in--prevented that.  Any suggestions??????????