R help - Aug 2012 - Error message

I suddenly started getting the error message below.
Not sure why.? If I type intalled.packages() it
shows Matrix and lme4 installed.? Can someone tell 
what's going on and what I need to do to remedy the
problem?? I'm running on a Linux box.
?
?
?
?
?
?
Loading required package: Matrix
Loading required package: lattice
Error in dyn.load(file, DLLpath = DLLpath, ...) : 
? function 'cholmod_l_start' not provided by package 'Matrix'
Error: package/namespace load failed for ?lme4?
Error: package/namespace load failed for ?lme4?

On 28/08/2012 10:31 AM, Scott Raynaud wrote:
> I suddenly started getting the error message below.
> Not sure why.  If I type intalled.packages() it
> shows Matrix and lme4 installed.  Can someone tell
> what's going on and what I need to do to remedy the
> problem?  I'm running on a Linux box.
>   
>   
>   
>   
>   
>   
> Loading required package: Matrix
> Loading required package: lattice
> Error in dyn.load(file, DLLpath = DLLpath, ...) :
>    function 'cholmod_l_start' not provided by package
'Matrix'
> Error: package/namespace load failed for ?lme4?
> Error: package/namespace load failed for ?lme4?

I would guess you are using incompatible versions.  Is R up to date?  
are both Matrix and lme4 up to date?

(If you posted sessionInfo() we'd know this...)

Duncan Murdoch
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