That was it - detaching 'nlme' was the trick. Thanks Walmes and the rest.

David

On 5/1/2012 7:47 PM, David Stevens wrote:
> Yes - I also have nlme.  Bad juju?
>
> David
>
> On 5/1/2012 1:32 PM, Walmes Zeviani wrote:
>> It could be a bad coexistence between packages in the same R session. Are
>> you using nlme and/or doBy packages too?
>>
>> Bests.
>> Walmes.
>>
>> ==========================================================================
>> Walmes Marques Zeviani
>> LEG (Laboratório de Estatística e Geoinformação, 25.450418 S, 49.231759 W)
>> Departamento de Estatística - Universidade Federal do Paraná
>> fone: (+55) 41 3361 3573
>> VoIP: (3361 3600) 1053 1173
>> e-mail: walmes@ufpr.br
>> twitter: @walmeszeviani
>> homepage: http://www.leg.ufpr.br/~walmes
>> linux user number: 531218
>> ==========================================================================
>>
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>>
>>
>>
>> ______________________________________________
>> R-help@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

-- 
David K Stevens, P.E., Ph.D., Professor
Civil and Environmental Engineering
Utah Water Research Laboratory
8200 Old Main Hill
Logan, UT  84322-8200
435 797 3229 - voice
435 797 1363 - fax
david.stevens@usu.edu




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