Dear Sean, Theres is no error message at all, simply R is not responding anymore. when loading library(biomaRt) the prompt sign appears again, and you can already run basic things like: listMarts() When I run sessionInfo() I get this: R version 2.10.1 (2009-12-14) i386-pc-mingw32 locale: [1] LC_COLLATE=English_United States.1252? LC_CTYPE=English_United States.1252 [3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C [5] LC_TIME=English_United States.1252 attached base packages: [1] stats???? graphics? grDevices utils???? datasets? methods?? base other attached packages: [1] biomaRt_2.2.0 loaded via a namespace (and not attached): [1] RCurl_1.3-1 XML_2.6-0 Thanks in advance, Juan On Wed, Mar 17, 2010 at 11:20 AM, Sean Davis <seandavi at="" gmail.com=""> wrote: > > On Wed, Mar 17, 2010 at 6:12 AM, Juan Pablo Fededa <jpfededa at="" gmail.com=""> wrote: > > Dear bioconductor-help contributors, > > > > > > I'm trying to use biomaRt package in R, and when I run the last one of the > > next two lines, the R GUI crashes: > > > > library("biomaRt") > > ensembl = useMart("ensembl", dataset = "hsapiens_gene_ensembl") > > > > I'm using R 2.10.1 and the latest versions of biomaRt, XML ( downloaded from > > CRAN-extras) and RCurl. > > Do you have any idea of what can I change to make it work? > > Hi, Juan. ?There is not enough information here to help you. ?Please > include the error message if you can and the output of sessionInfo() > after loading biomaRt. > > Sean