I've gotten this error a few times. Each time I rerun getBioC("exprs") , it get past it and then it happens again. * DONE (multtest) [1] "Installation complete" Error in if ((is.null(deps)) || (length(deps) == 0) || (deps == "")) return(NULL) : missing value where TRUE/FALSE needed I'm running R 1.9.1 on linux compiled from source. -Robert