Yes, I dit it. I got the same error message > qpcR:::cbind.na(1, 1:7) Error in get(name, envir = asNamespace(pkg), inherits = FALSE) : object 'cbind.na' not found -- View this message in context: http://r.789695.n4.nabble.com/library-qpcR-cbind-na-tp4023339p4023489.html Sent from the R help mailing list archive at Nabble.com.