Yes, my R is a few versions old.  I did not realize that the package 
version was dependent on the R version.  Thanks.  Gerard

PS was able to apply the code suggested by David W. to the 2.14 
version and got it to work.

At 12:32 AM 3/22/2009, Thomas Lumley wrote:
>On Sat, 21 Mar 2009, Gerard Smits wrote:
>
>>I have tried several sites (2 in Ca and also Australia) and find only
>>version 2.14.
>>
>>Which site did you pull 2.15 from?
>
>I have checked half a dozen sites in various countries, and they all 
>have 2.15 (even in the Southern Hemisphere -- it's not that updates 
>flow the wrong way south of the equator). The CRAN mirror status 
>page says that no mirrors are more than a couple of days out of date.
>
>Mostly likely you have an old version of R. CRAN binaries are built 
>only for the current version of R.
>
>      -thomas
>
>Thomas Lumley                   Assoc. Professor, Biostatistics
>tlumley@u.washington.edu        University of Washington, Seattle
>
>

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