My take-away was that the individual submitting the Cabrillo file for the IARU-HF contest could find all the information they need at or from that "Cabrillo Specifications" page. I checked all the links in that column and found that any that pointed to https://wwrof.org/cabrillo/xxx.txt, where xxx represents the contest name, return the same error message as above. It would appear that WWROF is no longer providing custom Cabrillo files for each contest. The only exception were these four where the links takes one to the contest sponsor's site.
