Failed installWithVers from local tar.gz

Hi,
I am having trouble installing a previous version of a package, and multiple
version of the package in R 2.12 or 2.15.  I have download the  tar.gz
packages from the CRAN archive, and created an folder holding all the files.

install.packages("changepoint_0.3.tar.gz",
lib="~/Rtools/dir/of/pkgs/",
repos=NULL,
dependencies=FALSE,
contriburl="~/Rtools/dir/of/pkgs/changepoint_0.3.tar.gz",
installWithVers= TRUE)

The tilde in the path makes me think this is a Mac OS question, and if so should have been explicitly stated, but the warning seems strange. Do you actually have a copy of "changepoint_0.3.tar.gz" in that location? What does this return:

list.files( path = "~/Rtools/dir/of/pkgs/")


You should also remember that type="mac.binary" is the default for install.packages on a Mac (if that is what we are dealing with) and that you would need type ="source" if installing on older versions of R. There is a binary version of pkg:changepoint at CRAN. S why not:

install.packages("changepoint") and just let the magic take hold?

David.
> 
> 
> I have received several different errors, depending on which version of R I
> am using
> Version 2.12: 
> warning: unable to access index for repository
> 'lib = "~/Documents/Rtools/dir/of/pkgs/"' is not writable
> 
> 
> Thanks for any thought.
> Cheers
> 
> 
> 
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David Winsemius, MD
Alameda, CA, USA