hi Gabor and Duncan, I make a test and I find that the key of problem is the setwd() command in my Rprofile.site
I don't understand this behaviour yet! :-( Cleber _______________________________________________________ Experimente já e veja as novidades. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.