[R] uninstalled and reinstalled R, now cannot install packages

[Sarah Hardy]

 Hello,

I have a student (running Windows 8) who ran into a problem installing the
RcmdrPlugin.IPSUR package and, despite instructions to the contrary,
uninstalled R and reinstalled. He uninstalled it using the Windows 8
utility. Now he cannot install any packages.

Here are the error messages he gets when he gets when he trys to use the
menu to install a package:
> utils:::menuInstallPkgs()
--- Please select a CRAN mirror for use in this session ---
Warning: unable to access index for repository
http://cran.mirrors.hoobly.com/bin/windows/contrib/3.1
Warning: unable to access index for repository
http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/3.1
Error in install.packages(NULL, .libPaths()[1L], dependencies = NA, type =
type) :
  no packages were specified
In addition: Warning message:
In open.connection(con, "r") :
  unable to connect to 'cran.r-project.org' on port 80.

Here are the messages he gets when using the install.packages command (it
doesn't matter what package he tries to install):

> install.packages("rpart")
Installing package into
‘C:/Users/michael.bottai/Documents/R/win-library/3.1’
(as ‘lib’ is unspecified)
Warning: unable to access index for repository
http://cran.mirrors.hoobly.com/bin/windows/contrib/3.1
Warning: unable to access index for repository
http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/3.1
Warning message:
package ‘rpart’ is not available (for R version 3.1.1)

Any help will be greatly appreciated!

Thank you,
Sarah


-- 
Sarah Hardy, PhD
Associate Professor of Mathematics
University of Maine Farmington
207-778-7124    Office: Brinkman 100

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