I once had a problem upgrading to a newer R version, problem which had to do
with Env-ironment. The root cause was a .Renviron file in my home directory
pointing to an older R version. Removing that file helped. That was on
linux.

-Halim

On 2/11/07, Andrew Gelman <gelman@stat.columbia.edu> wrote:
>
> I decided to update my packages and then had a problem with loading the
> Matrix package
> http://cran.at.r-project.org/bin/windows/contrib/2.4/Matrix_0.9975-9.zip
> This is what happened when I tried to load it in:
>
> > library("Matrix")
> Error in importIntoEnv(impenv, impnames, ns, impvars) :
>         object 'Logic' is not exported by 'namespace:methods'
> Error: package/namespace load failed for 'Matrix'
> >
>
> I hadn't had this probldem before; any thoughts?
>
> Andrew
>
> --
> Andrew Gelman
> Professor, Department of Statistics
> Professor, Department of Political Science
> Columbia University, New York
> gelman@stat.columbia.edu
> www.stat.columbia.edu/~gelman
>
> Office hours spring 2006:
>   to be announced
>
> Statistics department office:
>   Social Work Bldg (Amsterdam Ave at 122 St), Room 1016
>   212-851-2142
> Political Science department office:
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>   212-854-7075
>
> Mailing address:
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>   Columbia University
>   New York, NY 10027-5904
>   212-851-2142
>   (fax) 212-851-2164
>
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