[R] Failure loading library into second R 2.3.1 session on Windows XP

[Prof Brian Ripley]

On Fri, 29 Dec 2006, Uwe Ligges wrote:

> You can only expect that update / reinstall a ***package*** works if you
> have not yet loaded it into your R session.
> Hence close R, start it without loading the relevant package and then
> update/reinstall.

And for the record, this is answered in rw-FAQ Q4.8.

>
> Best,
> Uwe Ligges
>
>
> Talbot Katz wrote:
>> Hi.
>>
>> I am using R 2.3.1 on Windows XP.  I had installed a library package into my
>> first session and wanted the same package in my second session, so I went
>> out to the CRAN mirror and tried to install the package, and got the
>> following message:
>>
>> *********************************************************************
>>
>>> utils:::menuInstallPkgs()
>> trying URL
>> 'http://cran.ssds.ucdavis.edu/bin/windows/contrib/2.3/corpcor_1.4.4.zip'
>> Content type 'application/zip' length 133068 bytes
>> opened URL
>> downloaded 129Kb
>>
>> package 'corpcor' successfully unpacked and MD5 sums checked
>> Warning: cannot remove prior installation of package 'corpcor'
>>
>> The downloaded packages are in
>>         C:\Documents and Settings\Talbot\Local
>> Settings\Temp\RtmplCxarb\downloaded_packages
>> updating HTML package descriptions
>>> library(corpcor)
>> Error in library(corpcor) : there is no package called 'corpcor'
>>
>> *********************************************************************
>>
>>
>> After rebooting my machine, I dug into this a little further.  Upon
>> installing a package from a CRAN mirror, it seems to stay on my hard drive,
>> and I can load it in subsequent sessions from the "Load package..." menu
>> without going back to get it from a CRAN mirror.  However, if I do happen to
>> retrieve it again from a CRAN mirror, it appears that may corrupt the
>> version that was saved, and it no longer will be available from the "Load
>> package..." menu.  A reboot and re-retrieval of the package makes it
>> available again; I don't know whether there's any less drastic solution.
>>
>> This behavior doesn't occur with every package, but I have experienced it
>> with two different packages (corpcor and copula), so there seems to be
>> something going on.  I didn't see anything in the FAQ page about this, I
>> wonder if anyone can tell me more about this issue.
>>
>> Thanks!
>>
>>
>> --  TMK  --
>> 212-460-5430	home
>> 917-656-5351	cell
>>
>> ______________________________________________
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>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595