If I try that I get this: Error in scan(file, what = "", sep = sep, quote = quote, nlines = 1, quiet = TRUE, : invalid 'sep' value: must be one byte ? -- View this message in context: http://r.789695.n4.nabble.com/Reading-in-a-tab-delimitated-file-tp3013620p3013771.html Sent from the R help mailing list archive at Nabble.com.