Thank you to all the people who replied to my message. I removed all the packages and re-installed them. It works fine now. Sincerely, Mahlet On Sun, 23 Feb 2003, Rafael A. Irizarry wrote: > what happens if you try the same thing in a directory with no .RData? > > some objects from version 1.0 are not compatible with version 1.1. > On Thu, 20 Feb 2003, Mahlet Tadesse wrote: > > > > > I have installed the Bionconductor package in my directory and am > > attaching the libraries in my R session. I have not had this problem > > before, but now I get the following message for the affy package (all the > > other packages get attached without problem): > > > > > library(affy, lib.loc='/user/mtadesse/R_Packages') > > image is already generic, could be a problem. > > Error in mlistMetaName(f) : No way to associate a generic function with an > > object of class "NULL" > > Error in library(affy, lib.loc = "/user/mtadesse/R_Packages") : > > .First.lib failed > > > > > > Thank you for your help. > > Mahlet > > > > _______________________________________________ > > Bioconductor mailing list > > Bioconductor@stat.math.ethz.ch > > http://www.stat.math.ethz.ch/mailman/listinfo/bioconductor > > > > _______________________________________________ > Bioconductor mailing list > Bioconductor@stat.math.ethz.ch > http://www.stat.math.ethz.ch/mailman/listinfo/bioconductor >