Unable to import project from newer version

Has anyone run into this?
I'm working through "The Definitive Guide to Davinci Resolve 14".
Downloaded R14 exercise files worked fine up to Ch. 4.
When I try to import "Age of Airplanes.drp" I get "unable to import project from newer version".
[I don't know if this is relevant but this .drp is supposed to have broken media links -- the exercise is to relink media]
[I haven't found an answer by searching for support for the book so am turning to The Hive Mind.]
Setup: Macbook Air, OSX10.13.6, DVR 14.0.0.078.
Thank you anybody for your time.
I'm working through "The Definitive Guide to Davinci Resolve 14".
Downloaded R14 exercise files worked fine up to Ch. 4.
When I try to import "Age of Airplanes.drp" I get "unable to import project from newer version".
[I don't know if this is relevant but this .drp is supposed to have broken media links -- the exercise is to relink media]
[I haven't found an answer by searching for support for the book so am turning to The Hive Mind.]
Setup: Macbook Air, OSX10.13.6, DVR 14.0.0.078.
Thank you anybody for your time.