Could not parse the document you've specified; the code caused a critical XML parser error. If you're sure you have valid HTML/XHTML code, please report this behaviour as a bug.
This script makes an attempt to convert your document to valid XHTML code which can be parsed by freely available XML parsers. It is able to detect and fix mismatching tags, malformed attributes and unescaped characters that having special meanining in HTML. Nevertheless, not all pages displaying in such browsers like IE and FireFox could be fixed; in such cases, please use a code validator to fix critical errors.
Sometimes you may face a bug in the HTML-to-XHTML conversion routines that prevent the valid code to be parsed. In this case you can disable this behavior completely by setting the html2xhtml parameter ("Do not use conversion, input is valid XHTML") to some value. In this case, your code will be passed to the XML parser as-is.