Line 639, Column 13: end tag for "ul" which is not finished
Another possibility is that you used an element which requires a child element that you did not include. Hence the parent element is "not finished", not complete. For instance, in HTML the <head> element must contain a <title> child element, lists require appropriate list items (<ul> and <ol> require <li>; <dl> requires <dt> and <dd>, and so on.
<!-- LatestNews Plus Date Module - Another Quality Freebie from TemplatePlazza.com --> <ul class="lnd_latestnews"> </ul>