Hi,
that's odd and it's likely because of the text format, where do you get this string from?
have you tried to open this string you are getting from a texteditor ( a good one), so that you can check the actual content and maybe detect the same weird character.
try also to save this string in a variable and see if the result is the same, and then mess with the string, remove the offending char, try to completly remove the line and rewrite it as well.
Bye,
Jean