Sweave doesn't do csv.get()

Hi Everybody
I use R2.8.0 on Mac OS X. I set up LyX 1.6.1 to use Sweave today. I can
compile the test file I found on CRAN (
http://cran.r-project.org/contrib/extra/lyx/) without a problem and the
output looks very nice. In the test file the following R code is used.

<<myFirstChunkInLyX>>=
xObs <- 100; xMean <- 10; xVar <- 9
x <- rnorm(n=xObs, mean=xMean, sd=sqrt(xVar))
mean(x)
@

that should be the same as:

xObs <- 100
xMean <- 10
xVar <- 9
x <- rnorm(n=xObs, mean=xMean, sd=sqrt(xVar))
mean(x)

in the R console.

My problem is that I want to import data to use in my report. In the R
source I currently use to analyse my data I import it through csv.get(). I
have found that I cannot use csv.get() or write.csv() or that matter. I
don't seem to be able to use load() to get a .rda file in either

Is this issue related to LyX, LaTeX or R?

Thanks in advance
Christiaan

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