> 10:32:50        Error:  "Authorization Required"
> (401) at link <https://site/twiki/bin/rss> (from
> <https://myname:password@site/twiki/bin/viewauth/MyWi>
> ki)

HTTrack Help: Authentication
<http://httrack.kauler.com/help/Authentication>

Probably a form on the log in page.
Can't use capture method with httpS
You didn't filter out the log-out url