Save and Restore 2.0 File and Folder backup fails

Greetings to all from a recently-joined member - I hope you can help with a backup problem I have recently developed.

 

I have Norton Save and Restore 2.0 which I have scheduled to backup selected files and folders on a daily basis, and My Computer twice each week; the latter is working fine. However, for the past two weeks, I have noted failures to backup the files and folders at each attempt.

In each case, the logged event message is:

Error EC8F1C50: Cannot create file backup for job: File and Folder Backup. Error E4BC0012: An interaction with the catalog's database layer failed unexpectedly: sqlite3_step--5: database is locked.
Details: 0xE4BC0012.

All backups are to a separate hard drive - there is plenty of space available.

 

The Norton programme was pre-installed when I purchased the PC from Dell - I have no CD.

 

I have Googled the problem and noted several others have suffered in the same way over the past few years - I am hoping a solution to the problem has now been identified.

 

Any solutions/suggestions welcomed with pleasure.