Installed snapCGH and loads without any errors. While using the readPositionalInfo I however get the error that the function could not be found. Other snapCGH functions seems to be working. Anyone that could help on that? >read.clonesinfo() Error in read.table(file, sep = sep, header = T, quote = quote, as.is = TRUE, : element 1 is empty; the part of the args list of 'is.character' being evaluated was:(file) > readPositionalInfo() Error: could not find function "readPositionalInfo" Also help(readPositionalInfo) also gives help for readPositionalInfo! Macbook Pro R 2.9.2 GUI 1.29 Tiger build 32-bit (5464) Thanks. Regards, Kristian Almstrup