I'm trying to use an XML definition to describe a form. I'd like to use the XmlSerializer to Deserialize a file to create custom WebControls. However, it looks like I'm getting a namespace conflict: when I make my class inherit from Control, I get "The XML element 'EnableTheming' from namespace '' is already present in the current scope." (Note: I do not have an 'EnableTheming' element defined in my XML.)