Cause
This error occurs when the input Unicode file in UTF8 format does not contain characters that are legal UTF8 characters.
This is most-likely caused by specifying a file kind of Kind_Unicode_UTF8, when the actual file is not a true UTF8 format file.
Action
Check the validity of the file. This error may indicate a corrupted file. Use a non-JADE tool to find and correct the illegal UTF8 character sequence.