>>Ok, but how does one clear the cache in FF? I looked, but did not see anything.
>
>http://support.mozilla.org/en-US/kb/how-clear-firefox-cache
>
>My best guess is that you got an empty page. The indication of that message seems to represent that no data was received. If you get that all the time, I would definitely recommend to clear those temporary files, restart browser and see how it works. Otherwise, a new install might be needed. This is a situation I haven't seen before.

The instruction given at the web site do not match to any of the menu options.