i have noticed that the external.html has some ugly %s at
its top. prolly you are forgetting to fill in some text
there, as  the generated index.html has the html footer in
that place.

also external.html says "Clic to the link below". by
searching through libhttrack.dll, i found 2 occurances of
"Clic" in there.

in the "build"-menu i find the two options 
[ ] no error pages
[ ] no external pages
a little bit misleading. i think it's not giving the
slightest idea of what this is doing w/o reading the help.