Can't Update

[Marty]

I have loaded Linix Lite via USB and installed. I tried to update from the Lite welcome splash as requested.  It shows the Linix Lite Updates box, I clicked YES. It runs and shows a Updating software with sources, then after a short while it stops and shows an error message " Couldn't fetch the package cache ". Also when I try to use the Install Updates the Linix Lite Updates box opens, I click the Yes and get the same error message. I am not using Chrome. I am using Firefox browser.
Equipment ...........Dell inspiron 531 /  AMD  Athlon 64 x2 Dual Core Processor 3800+ / 2GB Memory

I want to be able to add software that Lite recommends. 
Please help

4/15/2016 - Just noticed I do not have " Add Additional Software " in the menu.

[shaggytwodope]

You'll need to run the commands mentioned in https://www.135978621.xyz/forums/insta...inux-lite/