Thank you Michael for your prompt reply.
Michael, do you mean that the SQLMAINT is a third party software?
If I were to use the normal SQL Server's way of schedulling
the Backup task, then will the next backup overwrites the
previously backup log file? Pls advise, thanks.

>This looks like a task that was created by the Database Maintenance Wizard. I'm not sure why your getting the error though...
>
>For work arounds you have a couple of options. First, there is a company that sells a replacement for SQLMAINT. Sorry, I don't remember their name. Second, you can schedule the explicit DUMP TRANSACTION command.
>
>-Mike