I am finally received NIS Version 16.2.0.7 and it is working properly. I have noticed this upgrade through viewing Norton Installer logs.
However, it does not fix "Silent Mode logs could not be deleted" bug. History Dialog did not provide "Clear" button for Silent Mode logs and Silent Mode logs did not assign to any category. Other than that, there is no other bugs I ever experienced with; even with previous version 16.1.0.33!