Thanks for the response
R version 3.5.1 (2018-07-02) -- "Feather Spray"
Copyright (C) 2018 The R Foundation for Statistical Computing
Platform: x86_64-w64-mingw32/x64 (64-bit)
I only downloaded recently but thought this was the latest. I understand the script is 1-2 years old.
As I stated previously I downloaded loads of packages (not sure how I did it!) - about 950 in total but don't see ModelMetrics.
I'll do a little more digging around
