An HTML validator error?

The following URL points to file that checks out as valid
on the on the HTML validator, yet contains what I believe
is a couple errors.  I have commented each error in the file

<http://cboh.org/w3c_validator_error.html>

I'm not a member of this list, so please email me if you'd
like to reach me.

BTW, thanks for the excellent tool.  Just trying to make
it better.

Rob