Hi, I've just implemented another fix in affylmGUI (see below). The new version (1.1.2) can be obtained from: http://bioinf.wehi.edu.au/affylmGUI/affylmGUI_1.1.2.tar.gz Regards, James Here's a description of the problem I fixed. - The topTable function in affylmGUI should have been using the cleancdfname() function but wasn't. This meant that sometimes when constructing a topTable, affylmGUI would try to download a CDF or annotation package even when this was unnecessary, just because the @cdfName slot of the AffyBatch object didn't necessarily match the name of the R package containing the CDF information.