> 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.