[R] Problem of lmer under FreeBSD

[ronggui]

I encounter such problem with lmer under FreeBSD, but not under
Windows. Anyone knows why? Thanks.

> example(lmer)

lmer> (fm1 <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy))
Error in UseMethod("as.logical") : no applicable method for "as.logical"
> traceback()
9: as.logical(EMverbose)
8: as.logical(EMverbose)
7: lmerControl()
6: do.call("lmerControl", control)
5: lmer(Reaction ~ Days + (Days | Subject), sleepstudy)
4: eval.with.vis(expr, envir, enclos)
3: eval.with.vis(ei, envir)
2: source(zfile, local, echo = echo, prompt.echo = paste(prompt.prefix,
       getOption("prompt"), sep = ""), continue.echo = paste(prompt.prefix,
       getOption("continue"), sep = ""), verbose = verbose,
max.deparse.length = Inf,
       encoding = encoding, skip.echo = skips)
1: example(lmer)
>

> sessionInfo()
R version 2.6.0 (2007-10-03)
i386-portbld-freebsd6.3

locale:
C

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

other attached packages:
[1] lme4_0.99875-9    Matrix_0.999375-2 lattice_0.16-5

loaded via a namespace (and not attached):
[1] grid_2.6.0      rcompgen_0.1-15 tools_2.6.0

-- 
Ronggui Huang

Department of Sociology, Fudan University, Shanghai, China

Department of Public and Social Administration, CityU, HK