I am using Ubuntu 16.04 LTS on a laptop.
I have downloaded and saved onto a USB Memory Stick - networx_linux_amd64.deb
It is 1.4MB in size.
When I click this file, it opens a Ubuntu Software window for Networx, which includes an “Install” button, and the information “Details, Size, 5.1 MB”. When I click this button, it changes to “Installing” for about two seconds. Nothing else happens.
What should happen, and where do I go from here?