R help - Jan 2011 - Errors in installing Matrix package

Good Morning R-Help Community:

I cannot install the "Matrix" package on R (version 2.12.1). Here are
the
errors:


> > Library(Matrix)
>
> Error in length(label) : could not find function ".extendsForS3"
> Error: package/namespace load failed for 'Matrix'
>

Any help would be appreciated.

Thanks,

Yingfeng

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Hi:

On Sun, Jan 2, 2011 at 7:36 PM, Yingfeng Zheng
<yingfeng.zheng@gmail.com>wrote:
> Good Morning R-Help Community:
>
> I cannot install the "Matrix" package on R (version 2.12.1). Here
are the
> errors:
>
>
> Install or load? They're different processes...
>
> > > Library(Matrix)
>
Why is library capitalized? R *is* a case-sensitive language...

HTH,
Dennis

> >
> > Error in length(label) : could not find function
".extendsForS3"
> > Error: package/namespace load failed for 'Matrix'
> >
>
>
> Any help would be appreciated.
>
> Thanks,
>
> Yingfeng
>
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>
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