> offline and try to access the website from my hard
> drive, I get an error message it is not able to
> display. I must be doing something wrong. Please

The page you clicked was not mirrored.
set options -> build -> no external pages/no error pages and you'll get a
warning page without trying to access the net.

As for why it wasn't mirrored, look in the log file or post the starting url
and the page (if different) and the link and only then may someone be able to
help.