Works on the first render but when I go to a new route and back again (using a link - not back button) it can no longer find the view. Not sure if this is a bug or I have something fundamentally wrong but I seem to be following all of the documentation and think that the fact it renders first time surely indicates it should work.
Full example: http://jsfiddle.net/4z3AH/2/
Problem is I was using View.create not View.extend.
Unclear in the documents but definitely not a bug.