Hello There, I'm receiving the following warnings, when trying out the example provided in the Beadarray package. Following is my system info. R version 2.10.0 (2009-10-26) x86_64-apple-darwin9.8.0 locale: [1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8 attached base packages: datasets tcltk tools stats graphics grDevices utils methods base other attached packages: debug_1.2.1 mvbutils_2.5.0 crlmm_1.4.0 beadarray_1.14.0 And, here is the warning that I received after following the exact steps specified in the help file. Warning messages: 1: In grep(colnames(QC[[i]]), colnames(exprs(BSData)), extended = FALSE) : 'extended = FALSE' is deprecated 2: In grep(colnames(QC[[i]]), colnames(exprs(BSData)), extended = FALSE) : argument 'pattern' has length > 1 and only the first element will be used 3: In grep(colnames(exprs(BSData)), samples, extended = FALSE) : 'extended = FALSE' is deprecated 4: In grep(colnames(exprs(BSData)), samples, extended = FALSE) : argument 'pattern' has length > 1 and only the first element will be used Please let me you if you have any idea about these messages.