NIS LiveUpdate (manual) downloads NIS engine update over and over and over again

WIN 7-64 SP1

NIS v.20.3.0.36

 

When I run LiveUpdate manually it has been downloading a recommended update for the NIS engine over and over and over. Each time it claims that it was successfully installed. If so, then why does it keep downloading it over and over again? And what update is it?

 

Is it the new engine 20.3.1.22?

 

The Norton Update Center reports that my version is up to date. Why then, when I run LiveUpdate manually, does it continues to download an update for the NIS engine, report that it installed and a minute later download it again. I have tried rebooting after the so-called successful installation, but that does not work. The update is downloaded again.

 

Any help would be appreciated. Thanks!