Missing file errors

2012-03-01 19:56:32 Error: [MissingViewException] View file "/Applications/MAMP/htdocs/gears/trunk/app/View/CoNsfDemographics/json/index.ctp" is missing.
#0 /Applications/MAMP/htdocs/gears/trunk/lib/Cake/View/View.php(360): View->_getViewFileName(NULL)
#1 /Applications/MAMP/htdocs/gears/trunk/lib/Cake/Controller/Controller.php(900): View->render(NULL, NULL)
#2 /Applications/MAMP/htdocs/gears/trunk/lib/Cake/Routing/Dispatcher.php(111): Controller->render()
#3 /Applications/MAMP/htdocs/gears/trunk/lib/Cake/Routing/Dispatcher.php(86): Dispatcher->_invoke(Object(CoNsfDemographicsController), Object(CakeRequest), Object(CakeResponse))
#4 /Applications/MAMP/htdocs/gears/trunk/app/webroot/index.php(96): Dispatcher->dispatch(Object(CakeRequest), Object(CakeResponse))
#5