Norton System Works 2008 - Antivirus scan stops when scanning Autoexec.bat...HELP???

My PC is hosed!  I tried running live update and it failed with LU1840.  I went to the Norton Update center and downloaded/ran live update from there.  I tried running a scan for viruses and when the scan reaches the Autoexec.bat file, I get a pop up box that says "Norton Antivirus Scanner Module has encountered a problem and needs to close.  We are sorry for the inconvenience."  If I click to see the data this is what I get:

 

Error Signature

AppName: navw32.exe AppVer: 12.8.0.4 ModName: dec2.dll

ModVer: 3.2.14.3 Offset: 000062c2

 

I am running windows xp.  Please help.


Thanks.