Hi Edgar, Sorry for not replying sooner, things have been a little manic here. I tried that, but nothing happens. I managed to get it to work with install.packages(file.choose(), repo = NULL, type = "source"), from a little googling I found that R 3.4.0 can be a little temperamental when not pulling things from a CRAN mirror, so have managed to find the installation files for R 3.0 and things seem to be working. In your experience is it worth setting up a miniCRAN?