greetings.

on tower box, yumex errs out on startup with error message;

Error in repository setup

Cannot find a valid baseurl for repo: base

You can try starting ‘yumex -n’ from a command line
and deselecting the repositories causing problems
and try again.

file CentOS-Base.repo is line for line same on both tower box and laptop. no problems on laptop.

what might be causing err?

tia.