Getting a 404 error during installation of R gtools package

Question

I'm getting a 404 error during the installation of the R gtools package:

> install.packages("gtools")
Installing package into ‘/Users/[...]/Library/R/3.1/library’
(as ‘lib’ is unspecified)
trying URL 'http://cran.rstudio.com/src/contrib/gtools_3.4.2.tar.gz'
Warning in install.packages :
  cannot open: HTTP status was '404 Not Found'
Error in download.file(url, destfile, method, mode = "wb", ...) : 
  cannot open URL 'http://cran.rstudio.com/src/contrib/gtools_3.4.2.tar.gz'
Warning in install.packages :
  download of package ‘gtools’ failed

Apparently, the latest version is not 3.4.2, but 3.5.0 (see http://cran.r-project.org/web/packages/gtools/index.html ), so I'm wondering if this explains the error. How do I install gtools (either 3.4.2 or 3.5.0 are fine)? My current setup is OS X Yosemite (10.10.3), R version 3.1.3, RStudio 0.99.437.

Answer 1

The version 3.5 should work with R 2.1 and higher. I would suggest that you download the package source tar.gz file available here and attempt to install using the command below:

install.packages("path_to_your_file/gtools_3.5.0.tar.gz", repos = NULL, type = "source")