Error Fix for "Tag Is Not Closed"

Sometimes I get an error message when I try to embed something that says: Your HTML cannot be accepted: Tag is not closed: I finally went looking for the fix for that and here it is.
Wow, it won't let me put it here, I get another error message. Here is the link to the fix. http://groups.google.com/group/blogger-help-howdoi/browse_thread/thread/b8e74122df176c61/8474e3610ba7dae0?q=Tag+is+not+closed&rnum=1#8474e3610ba7dae0