Unable to require installed package

On Thu, Jan 27, 2011 at 7:57 AM, ??? <liping.liulp at gmail.com> wrote:
Hi,

I write a package in Linux and ready to distribute, and I can install it in
linux and run it.
However, when I have install it in my Windows' R.

I can not 'require' it.

is.element("grt", installed.packages()[,1])
[1] TRUE
require(grt)
Loading required package: grt
Failed with error: ??'grt' is not a valid installed package?

Is there any pitfall between platforms?
And anywhere I could check more detailed error message.
How did you install it in Windows? If you just copied it from the
Linux install directory, or if its in a shared directory, it probably
wont work.

You need to do a proper R CMD INSTALL on Windows, and for that you'll
need the assorted dev tools for building R packages on Windows.
For the record: these days you do not need any extra tools unless the 
package contains code that needs compilation, and in the latter case 
we provide the win-builder service.

However, the message indicates no file grt/Meta/package.rds, which 
would be there if the package was copied from Linux.  So we need to 
know exactly what was done.
Barry

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Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
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Unable to require installed package

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