Thanks for the response Richard.
I cannot really figure out what happened. For troubleshooting I did a domestic flight from Vancouver to Kelowna and everything worked fine. Then I created a new plan with sundries for the South American routes I had trouble with and they all worked as well. I have been using navigragh for years and haven’t yet found a city pair that did not work. Of course I am using public airports that would normally support large transport jet operations, but even Ushuaia Argentina was available.
I guess it just had a hiccup somehow. I will consider this solved and let you know if it happens again.
Airports were Quito Equador, Lima, Peru and Santiago Chile.
Thanks again Richard
Gord Andrews