Understanding an error returned by stargazer in R -

i trying reproduce simplified version of r output described in this posting. more generally, related attempt use stargazer() function generate latex table lmer object.

following author's posting, i've loaded appropriate libraries , created 2 lmer objects using following code:

library(lme4) library(stargazer) data(cake) m1 <- lmer(angle ~ temp + (1 | replicate) + (1|recipe:replicate), cake, reml= false) m2 <- lmer(angle ~ factor(temperature) + (1 | replicate) + (1|recipe:replicate), cake, reml= false) 

when attempt following code, returns error below:

stargazer(m1, m2, style="ajps",  title="an illustrative model using cake data",  dep.var.labels.include = false,  covariate.labels=c( "temperature (continuous)",  "temperature (factor $<$ 185)",   "temperature (factor $<$ 195)",  "temperature (factor $<$ 205)",  "temperature (factor $<$ 215)",  "temperature (factor $<$ 225)")) 

error in objects[[i]]$zelig.call : $ operator not defined s4 class 

i not understand source of error, nor how remedy it, , appreciative of help.

i using rstudio version 0.99.441 in desktop mode.

my r version info follow:

platform       x86_64-apple-darwin13.4.0    arch           x86_64                       os             darwin13.4.0                 system         x86_64, darwin13.4.0         status                                      major          3                            minor          2.0                          year           2015                         month          04                           day            16                           svn rev        68180                        language       r                            version.string r version 3.2.0 (2015-04-16) nickname       full of ingredients      

my version of stargazer package 5.1, , version of lme4 1.1-7