I'm trying really hard to install the proper version of Rtools to work with my R install (3.5.1 with RStudio 1.1.453 on Windows laptop) but it isn't working for reasons I can't follow. Have updated R & Rtools & uninstalled other versions of Rtools from previous attempts.
library(devtools)
find_rtools(debug = TRUE)
#> Scanning path...
#> Scanning registry...
#> Found C:/Rtools for 3.5
#> WARNING: Rtools is required to build R packages, but no version of Rtools compatible with R 3.5.1 was found. (Only the following incompatible version(s) of Rtools were found:3.5)
#>
#> Please download and install the appropriate version of Rtools from http://cran.r-project.org/bin/windows/Rtools/.