Hi, I work with R and bioconductor only for 2 months, and I'm trying to work with the marrayTools package from Yee Hwa Yang. I follow recommandations but R answers me : > data <- gpTools() [1] 33 [1] "Reading ./Pf742.gpr" Generating ...Error in exty[[i]] : subscript out of bounds In addition: Warning messages: 1: the condition has length > 1 and only the first element will be used in: if (dev == "jpeg") { 2: the condition has length > 1 and only the first element will be used in: if (dev == "postscript") { Gpr files are in the working directory with gal file and library is load. thanks for help ! Ghislaine GUIGON Biostatisticienne Plateau Technique 2 - Puces ? ADN INSTITUT PASTEUR 25-28 rue du Dr ROUX 75724 Paris cedex 15 FRANCE tel: (33) (0)1 40 61 86 51 fax: (33) (0)1 45 68 84 06