Numerous errors

I am receiving all these error messages after a failed backup.  Would appreciate any suggestions.

Thanks,

Rick

 

Error EC8F1C50: Cannot create file backup for job: File Backup.
 Error E7D1001D: Unable to open '//./SymantecSnapshot0/Users/Rick/Documents/Pwdsetc/pwdsetc.xls'.
  Error EBAB03F1: Access is denied.
 Error E7D10049: Device SymantecSnapshot0 appears to be offline, disconnected, or otherwise unavailable.
 Error E4BC0004: Unable to backup file C:/Users/Rick/Documents/Pwdsetc/pwdsetc.xls. (UMI:V-281-3215-7248)

Details:
Source: Norton Ghost