Dear R experts... I would really appreciate your suggestions in installing a package in Windows Vista... I am unable to install a package on a windows vista based computer, in spite of running it as an administrator. The package "xpose4.2.1" is available from " https://sourceforge.net/projects/xpose/files/Xpose4/Xpose_4.2.1/xpose4_4.2.1_win32.zip/download " Following is the error message when I try to install the package from the Rgui command line... I get similar errors when I try to install the packages from Rgui ("Packages | Install packages from local zip files") menu, but with default lib="C:/Users/santosh/Documents/R/win-library/2.11" .>install.packages("C:/Users/santosh/Downloads/xpose4_4.2.1_win32.zip",repos=NULL,lib="C:/Program Files/R/R-2.11.1/library") Error in gzfile(file, "r") : cannot open the connection In addition: Warning message: In gzfile(file, "r") : cannot open compressed file 'xpose4_4.2.1_win32/DESCRIPTION', probable reason 'No such file or directory' However, I see "fileXXXXXXXX" folder in which the library related folders are installed.. Thanks again, Santosh [[alternative HTML version deleted]]