* This is what I was trying to do. > eset_plier<-justPlier(mydata) Error in justPlier(mydata) : NA/NaN/Inf in foreign function call (arg 23) In addition: Warning message: In justPlier(mydata) : ##### normalise=FALSE: No normalization will be performed in plier > eset<-mas5(mydata) background correction: mas PM/MM correction : mas expression values: mas background correcting...done. 20706 ids to be processed * * Session info* R version 2.15.0 (2012-03-30) Platform: i386-pc-mingw32/i386 (32-bit) locale: [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252 LC_MONETARY=English_United States.1252 [4] LC_NUMERIC=C LC_TIME=English_United States.1252 The mas5 worked but not justPlier. Could someone help me fix this or letme know what the error could be. Thanks, -- Mamta [[alternative HTML version deleted]]