Dear BioConductor gurus, On a Windows XP (SP2) machine, when a non-administrator user try to load the package affy (R 2.0.1, bioconductor 1.5), the following error message appears: local({pkg <- select.list(sort(.packages(all.available = TRUE))) + if(nchar(pkg)) library(pkg, character.only=TRUE)}) Loading required package: Biobase Loading required package: tools Welcome to Bioconductor Vignettes contain introductory material. To view, simply type: openVignette() For details on reading vignettes, see the openVignette help page. Loading required package: reposTools Error in file(file, "wb") : unable to open connection In addition: Warning message: cannot open file `C:/PROGRA~1/R/rw2001/library/liblisting.Rda' Error: package 'reposTools' could not be loaded The funny thing is the above liblisting.Rda is in fact accessible to the user. Does anyone know what is the problem? Thank you. -- Zhi-Wei Lu Institute for Data Analysis and Visualization (IDAV) UC Davis Phone: (530)-752-0494 Davis, CA 95616 Fax: (530)-752-8894