Scrolling List List Item Manager

Ive been following along a tutorial http://www.folio3.com/blog/creating-dynamic-scrollable-lists-with-new-unity-canvas-ui/ and found that line 40 in the List Item Controller produces an error. Basically there is a prefab with 3 child objects, name, icon, and text that gets instantiated when you want to add a new item to the scrolling list. However, it uses a list item controller in order to do that, but the getcomponent () reference produces an error that says "specify type". Please help!!!