fPortfolio error

Hello,

the code below (copied from the slide) works for me (the output is not
identical, though).

I'm using R 2.8.0 on windows, and the current version of Rmetrics packages
(from r-forge):
install.packages("fPortfolio",repos="http://R-Forge.R-project.org"), etc...

Carlos

sapply(.packages(),function(pkg)
.readRDS(system.file("Meta","package.rds",package=pkg))$DESCRIPTION["Version"])

fPortfolio.Version      Rglpk.Version   quadprog.Version    fAssets.Version 
          "290.75"            "0.2-6"           "1.4-11"           "290.75" 
  fCopulae.Version      adapt.Version robustbase.Version         sn.Version 
          "290.75"            "1.0-4"            "0.4-4"            "0.4-6" 
    mnormt.Version    fBasics.Version timeSeries.Version   timeDate.Version 
           "1.2-1"           "290.75"           "290.79"           "290.81" 
      MASS.Version      stats.Version   graphics.Version  grDevices.Version 
          "7.2-44"            "2.8.0"            "2.8.0"            "2.8.0" 
     utils.Version   datasets.Version    methods.Version       base.Version 
           "2.8.0"            "2.8.0"            "2.8.0"            "2.8.0" 


library(fPortfolio)
Data = as.timeSeries(data(LPP2005REC))[,1:6]
Spec = portfolioSpec()
Constraints = "LongOnly"
setNFrontierPoints(Spec) = 5
portfolioFrontier(Data, Spec, Constraints)

hello, 

have there been any changes recently to fPortfolio? i have taken the code 
from the following presentation 

http://www.rmetrics.org/Meielisalp2008/Presentations/Wuertz2.pdf
   slide 10/31 

Data <- as.timeSeries(data(LPP2005REC))[,1:6] 
Spec <- portfolioSpec() 
portfolioFrontier(data = Data , spec = Spec, constraints = Const) 

it returns error message 

Error in as.matrix(x at Data) : 
 no slot of name "Data" for this object of class "timeSeries" 

can anybody help me out? are there any good tutorials on fPortfolio. 
documentation seems to be a little rather technical. thanks. 

regards 

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