Hello, A newbie here to R. I have it installed on a linux machine. I installed the bioconductor packages recently. Was having problem with the package "hgu133plus2", "hgu133plus2cdf" and "hgu133plus2probe" when i type in library(hgu133plus2) at the R prompt, i get the ERROR: > library(hgu133plus2cdf) Error in library(hgu133plus2cdf) : 'hgu133plus2cdf' is not a valid package -- installed < 2.0.0? I get the same error with hgu133plus2 and hgu133plus2probe I have them installed in the directory /usr/lib64/R/library All the permissions seem ok. When i check for the packages installed..this what shows for the above 3 packages. >library() hgu133plus2 ** No title available (pre-2.0.0 install?) ** hgu133plus2cdf ** No title available (pre-2.0.0 install?) ** hgu133plus2probe ** No title available (pre-2.0.0 install?) ** ANybody know why this is happening? I have installed the the version 1.4 of cdf thanks for the help -Kiran ------------------------------------------------- This email is intended only for the use of the individual or...{{dropped}}

kannaiah at bsd.uchicago.edu wrote: > Hello, > > A newbie here to R. I have it installed on a linux machine. > I installed the bioconductor packages recently. > > Was having problem with the package "hgu133plus2", "hgu133plus2cdf" and > "hgu133plus2probe" > > when i type in library(hgu133plus2) at the R prompt, i get the ERROR: > > >>library(hgu133plus2cdf) > > Error in library(hgu133plus2cdf) : 'hgu133plus2cdf' is not a valid package -- > installed < 2.0.0? This usually indicates some problem with the installation. How exactly did you install these packages? Anyway, the most efficient way to fix this is to re-install. source("http://www.bioconductor.org/biocLite.R") biocLite(paste("hgu133plus2", c("", "cdf", "probe"), sep="")) Also, when you post please remember to give the ouput of sessionInfo() so we know what versions of things you are using. HTH, Jim -- James W. MacDonald, M.S. Biostatistician Affymetrix and cDNA Microarray Core University of Michigan Cancer Center 1500 E. Medical Center Drive 7410 CCGC Ann Arbor MI 48109 734-647-5623