If I try to load data from an alias file made using Cmd+Ctrl+A in finder for MacOSX, I get an error. Symbolic links are working well but sometimes, it is easier to use finder rather than terminal. Has someone a solution to help R to read the original aliased file ? Thanks Here is a reproducible example: A <- 10 save(A, file="A.Rdata") rm(A) # Make hard link system(paste("ln A.Rdata B.Rdata")) load(file="B.Rdata") # It works print(A) rm(A) # Make symbolic link system(paste("ln -s A.Rdata C.Rdata")) load(file="C.Rdata") # It works print(A) rm(A) # Make an alias of the A.Rdata file in finder using Cmd+Ctrl+A; the name of the new file is "A.Rdata alias" load(file="A.Rdata alias") It failed with this error: Error in load(file = "A.Rdata alias") : ?? mauvais num??ro magique de restauration de fichier (le fichier est peut ??tre corrompu) -- aucune donn??e charg??e De plus : Warning message: ?? file ???A.Rdata alias??? has magic number 'book' Use of save versions prior to 2 is deprecated