[R-sig-ME] Error when using models with lmer

[Olga Vitek]

Hello, 

I am executing the following code

> library("lme4")
> library(faraway)
> data(penicillin)
> fit4 <- lmer(yield ~ treat + (1|blend), penicillin)

and the lines below generate error messages

> library(gmodels)
> ci(fit4)
Error in as.vector(data) : 
 no method for coercing this S4 class to a vector

> contrast.function <- c(0, -1, 0, 0)
> test.result <- estimable(fit4, contrast.function)
Error in as.vector(data) : 
 no method for coercing this S4 class to a vector


This worked with with lme4_0.999375-40 and R version 2.13.1, but not with lme4_0.999375-42 and R version 2.14.1.

Would you have suggestions on how to make this work?
Thank you in advance
Olga Vitek

> sessionInfo()
R version 2.14.1 (2011-12-22)
Platform: i386-apple-darwin9.8.0/i386 (32-bit)

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] gmodels_2.15.1   faraway_1.0.5    lme4_0.999375-42 Matrix_1.0-3     lattice_0.20-0  

loaded via a namespace (and not attached):
[1] gdata_2.8.2   grid_2.14.1   gtools_2.6.2  MASS_7.3-16   nlme_3.1-102  stats4_2.14.1 tools_2.14.1