Try downloading the zip file using the browser interface to see if it
might be something with your proxy.  Do this outside of R to see if
you have the same problem.  After that, you can just install from a
local zip file.

On Mon, Sep 17, 2012 at 5:21 AM, Ian Shannon
<ian.shan...@environment.nsw.gov.au> wrote:
> Hi there,
>
> I have had a problem with loading the package XLConnectJars_0.2-0.zip from 
> the CRAN mirrors. The problem occurs when executing
> utils:::menuInstallPkgs()
> I have traced the problem down to the "download" internal command.  It 
> appears that files over approx 15 MB are being truncated.  The exact point of 
> truncation varies slightly but the truncation is on a 4096-byte boundary.
>
> I am running =>
>
>
> R version 2.15.1 (2012-06-22) -- "Roasted Marshmallows"
> Copyright (C) 2012 The R Foundation for Statistical Computing
> ISBN 3-900051-07-0
> Platform: i386-pc-mingw32/i386 (32-bit)
>
> I have also run the code using the -- vanilla  start-up parameter with no 
> change in outcome.
>
> I am using  "internet2"  to get past our proxy server.  I have isolated the 
> problem using the following script
> derived from a code fragment called by the menuInstallPkgs() function.
>
> options(timeout = 120)   makes no difference because the failure occurs 
> before the timeout of 60 (or 120) seconds elapses.
>
>
> ## sample R code sequence to reproduce error
> setInternet2(TRUE);
> url <- "http://cran.csiro.au/bin/windows/contrib/2.15/";;
> dir <- "U:\\";
>
> ## This download being reasonable small works OK
> file <- "XLConnect_0.2-1.zip";
> status <- .Internal(download(paste0(url, file), paste0(dir, file), 
> quiet=FALSE, mode="wb", cacheOK=FALSE));
> cat(paste("the value of status for",  file, "is", status, "\n\n"));
>
>
> ## This big download fails - a progress indicator quickly progresses to 99% 
> and stops
> file <- "XLConnectJars_0.2-0.zip";
> status <- .Internal(download(paste0(url, file), paste0(dir, file), 
> quiet=FALSE, mode="wb", cacheOK=FALSE));
> cat(paste("the value of status for",  file, "is", status, "\n\n"));
>
>
>
> This produces the following output -
>
>
> trying URL 'http://cran.csiro.au/bin/windows/contrib/2.15/XLConnect_0.2-1.zip'
> Content type 'application/zip' length 1358587 bytes (1.3 Mb)
> opened URL
> downloaded 1.3 Mb
>
> the value of status for XLConnect_0.2-1.zip is 0
>
> trying URL 
> 'http://cran.csiro.au/bin/windows/contrib/2.15/XLConnectJars_0.2-0.zip'
> Content type 'application/zip' length 16486857 bytes (15.7 Mb)
> opened URL
> downloaded 15.6 Mb
>
> the value of status for XLConnectJars_0.2-0.zip is 0
>
> Warning message:
> In eval(expr, envir, enclos) :
>   downloaded length 16355328 != reported length 16486857
>>
>
>
>
> Any suggestions on what is needed to get this going?
>
> Thanks,
>
>
> Ian
> Ian Shannon
> Landscape Modelling & Decision Support
> Scientific Services
> Office of Environment and Heritage
> Department of Premier and Cabinet
> PO Box A290
> Sydney South
> NSW      1232
> +61 2 99 955 490
> Ian dot Shannon at Environment dot nsw dot gov dot au
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-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.

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