[HTML5] The worst conformance checker error messages

[Henri Sivonen]

This is a question to those who have tried
http://hsivonen.iki.fi/validator/html5/

I know that the most confusing error messages relate to the content  
model of <div> (and bimorphic content models in general). Other than  
that, what are the worst error messages you have faced?

-- 
Henri Sivonen
hsivonen at iki.fi
http://hsivonen.iki.fi/