You may face this error when you add a Dojo component to a normal DOM element using the appendChild DOM API. This post shows you how to fix this issue: http://www.technicaladvices.com/2012/08/01/could-not-convert-javascript-argument-arg-0-nsidomhtmldivelement-appendchild/

Tags:  nsidomhtmldivelement.appe... convert javascript appendchild domnode argument not could