With the recent OS changes (windows 2000) necessitated by various worms, etc, I have now been receiving this error message when I run update and I am not sure how I can correct.
update.packages() trying URL `http://cran.r-project.org/bin/windows/contrib/PACKAGES'
Error in download.file(url = paste(contriburl, "PACKAGES", sep = "/"), :
cannot open: HTTP status was `404'
Thanks, Greg G