Hello, I have a sample file (attached) which I cannot read into Text: Prelude Control.Applicative> Data.Text.IO.readFile "foo" *** Exception: utf8.txt: hGetContents: invalid argument (invalid byte sequence) Prelude Control.Applicative> Data.Text.Encoding.decodeUtf8 <$> Data.ByteString.Char8.readFile "foo" "*** Exception: Cannot decode byte '\x6e': Data.Text.Encoding.decodeUtf8: Invalid UTF-8 stream So it seems that foo doesn't contain valid UTF-8. However, System.IO.UTF8 has no problem reading the data: Prelude Control.Applicative> System.IO.UTF8.readFile "foo" "3591,,,dihigma99h,1905,5,25,CUBA,,Matanzas,1971,5,20,CUBA,,Cienfuegos,Martin,Dihigo,,Mart\65533n Magdaleno Dihigo (Llanos),,190,74,R,R,,,,dihigma99,dihigma99,dihim001,dihigma99,dihigma99\r\n" Shouldn't these all have the same behavior? I am running on Mac OS X 10.8.1, with GHC 7.4.2 and text-0.11.2.3. thanks for any insight, Jeff