On Windows XP with
R version 2.5.0 Under development (unstable) (2007-01-22 r40548)
I always get a message about grdevices when I run Rscript, e.g.
C:\> rscript NUL
During startup - Warning messages:
1: there is no package called 'grdevices' in: library(package, lib.loc =
lib.loc
, character.only = TRUE, logical = TRUE,
2: package grdevices in options("defaultPackages") was not found