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I get this error message though I believe that "\xC2" a valid utf-8 character is (LATIN CAPITAL LETTER A WITH CIRCUMFLEX): Sorry, I am unable to validate this document because on line 532 it contained one or more bytes that I cannot interpret as utf-8 (in other words, the bytes found are not valid values in the specified Character Encoding). Please check both the content of the file and the character encoding indication. The error was: utf8 "\xC2" does not map to Unicode
UTF-8 for LATIN CAPITAL LETTER A WITH CIRCUMFLEX (U+00C2) is \xC3\x82. \xC2 is valid in UTF-8 only if followed by a byte in the range 80-BF. I suggest closing this bug as invalid.