Hi List, I am trying to input data and get error messages. My arrays were quantitated by Spot 2.0 Jainlab.ucsf.edu/Projects.html) I believe it has a problem with the scanned results format. Any ideas? Finish creating a new marrayLayout: MamDev.layout Finish creating a new marrayInfo: MamDev.target Finish creating a new marrayInfo: MamDev.genes [1] "Reading D:\\Bioconductor\\2nd_scan/MamaDev.Inv2.txt" Error in readLines(con, n, ok) : invalid value for `n' Thanks. Moshe