If the errors you're seeing fit on single lines and follow some patterns - like in the example you've shown - it might suffice to filter the bad file through something simple like say
perl -ne 'print $_ if not m/^<es\s*$/' <bad_input.file >corrected_inpu +t.file
That 'ignores' the fact that there's anything about XML and as such could be fast enough to be usable, even if it is an extra step.

Krambambuli

In reply to Re^2: Ignoring not well-formed (invalid token) errors by Krambambuli
in thread Ignoring not well-formed (invalid token) errors by brettski

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