[R] Problem with lme4

[Peter Ho]

Hi,

I cannot seem to get lme4 to work. I have installed the lme4 and Matrix 
package with apt-get. and both can be found in /usr/lib/R/site-library.
When I tried an example for lmer, R could not find the function lmer(),

 > library(lme4)

Attaching package: 'lme4'


        The following object(s) are masked from package:nlme :

         getCovariateFormula getResponseFormula groupedData

Error in autoloader(name = "confint", package = "MASS") :
        autoloader did not find 'confint' in 'MASS'
 > (fm1 <- lmer(decrease ~ treatment + (1|rowpos) + (1|colpos),
+              OrchardSprays))
Error: couldn't find function "lmer"
 >               

Is this a bug with the lme4 package for Debian (r-cran-lme4)? 


Peter



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Attaching package: 'nlme'


        The following object(s) are masked from package:stats :

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This is mgcv 1.2-4
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 > library(Matrix)
 > library(lme4)

Attaching package: 'lme4'


        The following object(s) are masked from package:nlme :

         getCovariateFormula getResponseFormula groupedData

Error in autoloader(name = "confint", package = "MASS") :
        autoloader did not find 'confint' in 'MASS'
 > (fm1 <- lmer(decrease ~ treatment + (1|rowpos) + (1|colpos),
+              OrchardSprays))
Error: couldn't find function "lmer"
 >