Dear list, on the page http://www.bioconductor.org/docs/install-howto.html the command biocLite(c("pkg1", "pkg2")) is recommended to install pkg1 and pkg2. On my system (linux, R 2.1, Bioconductor 1.6), this gives an error: > biocLite(c=("affyPLM")) Running bioCLite version 0.1 with R version 2.1.1 Running biocinstall version 1.2 with R version 2.1.1 Warning: unable to access index for repository affyPLM dependencies 'affy', 'affydata', 'affyPLM', 'annaffy', 'annotate', 'Biobase', 'Biostrings', 'DynDoc', 'gcrma', 'genefilter', 'geneplotter', 'hgu95av2', 'limma', 'marray', 'matchprobes', 'multtest', 'reposTools', 'ROC', 'vsn', 'xtable' are not available The following works: > biocLite(pkgs=("affyPLM")) Unless there is something strange going on in my installation, the installation instructions might need to be changed to this effect. cheers & thanks for this wonderful tool! Peter

> biocLite(c("pkg1", "pkg2")) > is recommended to install pkg1 and pkg2. On my system (linux, R 2.1, Bioconductor 1.6), this gives an error: > >> biocLite(c=("affyPLM")) Peter, I think this fails because there is no "=" between the 'c' and the '(' try: biocLite(c("affyPLM")) tks, b.