Hi, I am having trouble using the makePDpackage function, other people have had the same problem: https://stat.ethz.ch/pipermail/bioconductor/2008-January/020922.html I have found no solution though, if anyone could help me understand what's going on I would greatly appreciate it. The concise problem is: makePDpackage ("Sc03b_MF_v04.bpmap", file1="Sc03b_MF_v04.cif", manufacturer="affymetrix", type="tiling") affymetrix tiling The package will be called pd.sc03b.mf.v04 Error in makeBPMAPenv(designFile, file1, genomebuild = genomebuild) : SET_VECTOR_ELT() can only be applied to a 'list', not a 'NULL' Thanks, Owen. Full R session: R version 2.6.1 (2007-11-26) Copyright (C) 2007 The R Foundation for Statistical Computing ISBN 3-900051-07-0 R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details. Natural language support but running in an English locale R is a collaborative project with many contributors. Type 'contributors()' for more information and 'citation()' on how to cite R or R packages in publications. Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for an HTML browser interface to help. Type 'q()' to quit R. > library (makePlatformDesign) Loading required package: affyio Loading required package: oligo Loading required package: Biobase Loading required package: tools Welcome to Bioconductor Vignettes contain introductory material. To view, type 'openVignette()'. To cite Bioconductor, see 'citation("Biobase")' and for packages 'citation(pkgname)'. Loading required package: splines Loading required package: RSQLite Loading required package: DBI Loading required package: preprocessCore Loading required package: AnnotationDbi Loading required package: affxparser Loading required package: oligoClasses This is the oligo package > makePDpackage ("Sc03b_MF_v04.bpmap", file1="Sc03b_MF_v04.cif", manufacturer="affymetrix", type="tiling") affymetrix tiling The package will be called pd.sc03b.mf.v04 Error in makeBPMAPenv(designFile, file1, genomebuild = genomebuild) : SET_VECTOR_ELT() can only be applied to a 'list', not a 'NULL' > traceback () 3: .Call("ReadBPMAPFileIntoRList", bpmapFile, PACKAGE = "affyio") 2: makeBPMAPenv(designFile, file1, genomebuild = genomebuild) 1: makePDpackage("Sc03b_MF_v04.bpmap", file1 = "Sc03b_MF_v04.cif", manufacturer = "affymetrix", type = "tiling") ____________________________________________________________ Receive Notifications of Incoming Messages Easily monitor multiple email accounts & access them with a click. Visit http://www.inbox.com/notifier and check it out!