Hello, I am currently getting a strange error when I call installed.packages():
Error in if (file.exists(dest) && file.mtime(dest) > file.mtime(lib) && : missing value where TRUE/FALSE needed Calls: installed.packages I am working with R 3.4.0 on Windows. I didn't get this error with R 3.3.3. Apparently, file.mtime() is returning NA well applied to a directory, and this causes the entire && expression to be NA, then the "if" fails because it needs either T or F. The source of "installed.packages" seems to be roughly the same as in R 3.3.3, so I wonder if there have been other changes in R, maybe the logical operators, that would make this function fail. Any idea? Best regards, Jean-Claude Arbaut [[alternative HTML version deleted]] ______________________________________________ Remail@example.com 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.