I have a text file with Vertical Bar{|} separated values and I am using a Flat File source to read the values which fails with the above error.
I have a Flat File Co
If you go to the Flat file connection manager under Advanced and Look at the "OutputColumnWidth" description's ToolTip It will tell you that Composit characters may use more spaces. So the "é" in "Société" most likely occupies more than one character.
EDIT: Here's something about it: http://en.wikipedia.org/wiki/Precomposed_character