Hi RajPatil It seems that you are using an old version of mlxLibrary.
You need to install mlxLibrary 1.1.0 from the Lixoft website http://download.lixoft.com/?software=mlxlibrary Marc -- View this message in context: http://r.789695.n4.nabble.com/Error-in-running-pkmodel-function-in-mlxR-package-tp4702110p4702745.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.