Weird notice when upgrading from NIS 20.x to 21.x

Hi,

 

I upgraded another Win 7 x64 bit system today from 20.x to 21.x.

 

Install was going OK, until NIS "requested" to install a patch of some kind. It was a window with a red X. Then it said to reboot now and I did. Everything seems OK. Anyone experience the same thing?

 

Another question,

 

A folder named Norton installation Files was created. Do I actually need that folder?

I'm looking for a clean install. Is there an NRT for 21.x?

 

Sorry for all these questions.

 

Tnx,

 

Flavio_C