Dear List, I am using the Category package to do some gene enrichment analysis, and usually save my KEGGmnplot's using a dev2bitmap command. This has worked just fine, until suddenly earlier today I got this error-message: > dev2bitmap("04610_080721.jpg",type="jpeg", height = 10, width = 10, res = 200) Error in dev2bitmap("04610_CSF080721.jpg", type = "jpeg", height = 10, : sorry, 'gs' cannot be found I don't know what this means, it seems to be something about my environment. (From dev2bitmap function:) gsexe <- Sys.getenv("R_GSCMD") if (is.null(gsexe) || !nzchar(gsexe)) { gsexe <- "gs" rc <- system(paste(shQuote(gsexe), "-help > /dev/null")) if (rc != 0) stop("sorry, 'gs' cannot be found") } I cant figure out how to fix this. Any help or tips would be greatly appreciated. Thank you, Boel SessionInfo etc below: > sessionInfo() R version 2.7.1 (2008-06-23) x86_64-unknown-linux-gnu locale: .... attached base packages: [1] splines tools stats graphics grDevices utils datasets [8] methods base other attached packages: [1] KEGG.db_2.2.0 hgu133plus2.db_2.2.0 Category_2.6.0 [4] graph_1.18.1 annotate_1.18.0 xtable_1.5-2 [7] AnnotationDbi_1.2.2 RSQLite_0.6-9 DBI_0.2-4 [10] simpleaffy_2.16.0 genefilter_1.20.0 survival_2.34-1 [13] affyPLM_1.16.0 gcrma_2.12.1 matchprobes_1.12.0 [16] affy_1.18.2 preprocessCore_1.2.0 affyio_1.8.0 [19] Biobase_2.0.1 loaded via a namespace (and not attached): [1] cluster_1.11.11 RBGL_1.16.0 And this is what I am trying to save, a plot that works just fine: KEGGmnplot("04610", eS, group=groupMO, data="hgu133plus2", main=paste(KEGGPATHID2NAME[["04610"]], paste("Overall:", round(tA["04610"], 3)), sep="\n")) --~*~**~***~*~***~**~*~-- Boel Brynedal, MSc, PhD student Karolinska Institutet Department of Clinical neuroscience