[R-SIG-Mac] problem loading ggplot2 package

[linsleys]

I'm having trouble loading ggplot2 using R version 2.12.1, as shown
below. I can't seem to find a relevant post that fixes my problem. Any
help would be very much appreciated. Thanks,

peter l

> install.packages('ggplot2', dep = TRUE)
trying URL 'http://cran.cnr.Berkeley.edu/bin/macosx/leopard/contrib/2.12/ggplot2_0.8.9.tgz'
Content type 'application/x-gzip' length 2481399 bytes (2.4 Mb)
opened URL
=================================================
downloaded 2.4 Mb


The downloaded packages are in
    /var/folders/XF/XF0tU7gdGTeF4Th7KhKYDk+++TI/-Tmp-//RtmpFMnqLB/downloaded_packages
> library(ggplot2)
Error in assign(names[i], dots[[i]], env = envir) :
  invalid first argument
Error : unable to load R code in package 'ggplot2'
Error: package/namespace load failed for 'ggplot2'

sessionInfo() R version 2.12.1 (2010-12-16) Platform:
x86_64-apple-darwin9.8.0/x86_64 (64-bit) locale: [1]
en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8 attached base
packages: [1] grid stats graphics grDevices utils datasets methods [8]
base other attached packages: [1] proto_0.3-8 reshape_0.8.4 plyr_1.4
loaded via a namespace (and not attached): [1] tcltk_2.12.2
tools_2.12.2



-- 
Peter and Leslie Linsley
2528 11th Ave W
Seattle, WA 98119
linsleys at comcast.net
206.818.3206  P-cell
206-818-3167  L-cell