[R] Rcmder Error

[Max]

Hi Guys,

I am trying to show a plot of means with two groups. i.e.

> plotMeans(s$CON, s$GENERAL.STARTING.DEPT, s$Cat, error.bars="se")

and I get the error in Rcmdr:

ERROR:  need finite 'ylim' values

Pasting the code in R gets the following error:

x) : no non-missing arguments to min; returning Inf
Warning in max(x) : no non-missing arguments to max; returning -Inf
Error in plot.window(...) : need finite 'ylim' values

I'm not sure what's going on. I know in R 2.6 I ran the same code and 
had no problem. Any suggestions on what I can do to fix it?

Thanks,

-Max