Hello, To analyze Human Gene 1.1 st array, I used these CDF files, which are: HuGene-1_1-st-v1_ascii.CDF and (ii) HuGene-1_1-st-v1,byTranscript-fsetid,pd.hugene.1.1.st.v1.cdf (from *http://nmg-r.bioinformatics.nl/NuGO_R.html*<http: nmg-r.bioinf="" ormatics.nl="" nugo_r.html=""> ). Unfortunately, I am getting the errors (see bellow) that stopped me to move forward in my work. Please let me know if there is another website to download this CDF file. FYI, I am using MATLAB "affygcrma" function. Warning: The ChipType (HuGene-1_1-st-v1) of CEL file sample01_HuGene1.1ST_C04_2.CEL does not match the ChipType (HuGene-1_1-st-v1_ascii) of library file HuGene-1_1-st-v1_ascii.CDF. > In celintensityread at 255 In affygcrma at 140 Furthermore, when I used "limma" (R-package) to analyze this array, I got another set of errors. Please provide me your comments and solutions that I could get some output results from this array. Thanks, Jerry [[alternative HTML version deleted]]