Hi guys,
Is your file really encoded in UTF-8?
My guess if you are on Windows is that the encoding is ISO-8859-1.
An option is to open the file with an Hexadecimal editor to get the real bytes and find the encoding (I doubt a straight quote will cause the issue since it is the same encoding in UTF-8 and in ISO-8859-1).
For a 'é' character, encoding is:
UTF-8: a9c3 000a
ISO-8859-1: 0ae9
++
Julien