Lutz, during newLisp web-server usage, if I call a non-existing page, I get:
> (get-url "http://127.0.0.1:4701/prova.ex")
"ERR:404 File or Dirctory not found: prova.exrn"
As you can see the word "Directory" is not correct :-)
Cheers
This spelling error was corrected in version 10.1.0. You are running an older version.