David, That message is not an error. It is simply telling you that there are functions named qqnorm an qqplot in the extRemes package that are "masking" functions of the same name in the stats package. Functions in a package being loaded with the same names as functions in a package already loaded will mask those previously loaded functions.
This means that if you call qqplot() or qqnorm() you will be using the versions found in the extRemes package. If you wanted to use the version of qqplot in stats, you would have to call it by qualifying the namespace: stats::qqplot In any case, the package extRemes is loading properly for you and you can begin to use it. -- View this message in context: http://r.789695.n4.nabble.com/The-following-object-s-are-masked-from-package-stats-tp4636079p4636085.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.