05-24-2015, 03:06 PM (This post was last modified: 05-24-2015, 03:07 PM by CroNiX.)
Well, because you're not supposed to use a "controller within a controller". Can you point out anywhere in the user guide which suggests you should, or can? HMVC extension allows this, but vanilla CI isn't meant to. Libraries are the place to reuse code in multiple controllers.