XML Error: "input conversion failed"

[neoform]

Hi, i'm using PHP's XML functions to process 3 XML feeds. For some reason the 3rd feed (which renders as proper XML in firefox) is throwing the following error

WARNING - xml_parse_into_struct() [function.xml-parse-into-struct]: input conversion failed due to input error, bytes 0x9D 0x20 0x2E 0x2E (line: 10)

from this code:

PHP Code:
$parser = xml_parser_create();xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
xml_parse_into_struct($parser, $xml, $tags);
xml_parser_free($parser);

(line 10 is the "xml_parse_into_struct($parser, $xml, $tags);" line)

any ideas?
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