Form not allowed in document type?

I’ve been trying to get my theme to validate. I keep getting this one error at http://validator.w3.org/check?uri=http%3A%2F%2Ffamilywebwatch.com%2Fblog%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1

The error is “document type does not allow element “form” here; assuming missing “li” start-tag”

If I switch to another theme, it likes it, but there’s something about the Anaconda theme that I just can’t figure out why it’s catching this a problem.