Hi, I am new to using Bioconductor. I was trying to load my CEL files using ReadAffy(widget=TRUE) and it gave me this message: Error in fileBrowser(textToShow = "Choose CEL files", testFun = hasSuffix("[cC][eE][lL]")) : couldn't find function "tktoplevel" Error in end() : couldn't find function "tkgrab.release" Can you help? Thanks, Tina Naik