R help - Jul 2009 - Error when running the examples in plotMultiTS / QRMlib

Dear List,

R ist somtimes a bit frustrating...

I ran the example from
http://bm2.genes.nig.ac.jp/RGM2/R_current/library/QRMlib/man/plotMultiTS.html
and I get an error.

Has someone an explanation for this?

Thanks a lot,
Steve

CODE:
  library(R.utils)

  library(tseries)
  library(wmtsa)
  library(waveslim)
  library(brainwaver)

  library(timeSeries)
  library(QRMlib)
> ?plotMultiTS
> data(DJ);
>      Sdata <- window(DJ, from="1993-01-01",
to="2000-12-31");
>      #select only 4 stocks from 30-stock index:
>      tsSelections <-
c("GE","INTC","KO","JNJ");
>      Sdata <- Sdata[,tsSelections];
Error in .subset(x, i, j, drop = FALSE) :
  object of type 'S4' is not subsettable
>      Zdata <- log(Sdata);
>      rm(Sdata);
>      #Plot all 4 columns on same graph:
>      plotMultiTS(Zdata, reference.grid=TRUE);
Error: subscript out of bounds
>      #plot only columns 2 and 3 on the graph:
>      plotMultiTS(Zdata, colvec= c(2,3),reference.grid=TRUE,
format="%Y-%m");
Error in .subset(x, i, j, drop = FALSE) :
  object of type 'S4' is not subsettable


2nd question:
running > plotMultiTS i find the line:
"xxx = tS[, i]@Data"

Why would someone name a variable "xxx"? Is this some
"feature" or
just poor programming?