Hi all, I'm having a difficult time using the untar() after I retrieve the supp files using getGEOSuppFiles(). I tried it with gse15653 and gse12643. Both times different errors and I'm not quite sure what else to do. My goal is to retrieve the associated .cel files. Please help. Thanks. -Avoks > untar("GSE12643/GSE12643_RAW.tar", files = NULL, list = FALSE, exdir = ".", + compressed = gzip, extras = NULL, verbose = FALSE, + tar = Sys.getenv("TAR")) Error in rawToChar(block[seq_len(ns)]) : embedded nul in string: '\023?\030?T?\002@?e4-\024?W?&??i0??"XR??CGw?\001\024uA?}]Dw???D\036?' > > untar("GSE15653/GSE15653_RAW.tar", files = NULL, list = FALSE, exdir = ".", + compressed = gzip, extras = NULL, verbose = FALSE, + tar = Sys.getenv("TAR") + ) Error in getOct(block, 100, 8) : invalid octal digit > sessionInfo() R version 2.14.1 (2011-12-22) Platform: i386-pc-mingw32/i386 (32-bit) locale: [1] LC_COLLATE=English_xxx.1252 LC_CTYPE=English_xxx.1252 [3] LC_MONETARY=English_xxx.1252 LC_NUMERIC=C [5] LC_TIME=English_xxx.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] affy_1.32.1 GEOquery_2.20.8 Biobase_2.14.0