Hello,
Here are the steps to the error: 1. Uninstall R version 2.x.y. 2. Install the latest version (3.2.3) of R. 3. Copy all my libraries that were not in the new version into the new R library. 4. Run "> update.packages(checkBuilt=TRUE, ask=FALSE)" under R-Studio. Many packages were updated but for some I received: "Error : package 'xxx' was built before R 3.0.0: please re-install it" error. Here is an example: * installing *source* package 'agricolae' ... * package 'agricolae' successfully unpacked and MD5 sums checked ** R ** data ** inst ** preparing package for lazy loading Error : package 'spdep' was built before R 3.0.0: please re-install it ERROR: lazy loading failed for package 'agricolae' * removing 'C:/Program Files/R/R-3.2.3/library/agricolae' Warning in install.packages : running command '"C:/PROGRA~1/R/R-32~1.3/bin/i386/R" CMD INSTALL -l "C:\Program Files\R\R-3.2.3\library" C:\Users\user\AppData\Local\Temp\RtmpG8mSYd/downloaded_packages/agricolae_1. 2-3.tar.gz' had status 1 Warning in install.packages : installation of package 'agricolae' had non-zero exit status The downloaded source packages are in 'C:\Users\user\AppData\Local\Temp\RtmpG8mSYd\downloaded_packages' If I try to install "spdep" package first I get the following error: > install.packages("spdep") also installing the dependency 'sp' Packages which are only available in source form, and may need compilation of C/C++/Fortran: 'sp' 'spdep' These will not be installed How can I fix such errors? I can Thank you. Cem [[alternative HTML version deleted]] ______________________________________________ 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.