When I install CI 2.0 and Modular Extensions, then extend MX_Controller with MY_Controller, my Menu library stops working.  As far as I can see it’s because the get_instance() method returns a CI Object, not a controller_name Object, when I run it in a controller.  Does this make sense?

As a result, I can no longer access controller member variables using $CI =& get_instance(), followed by $CI->var_name.

Related question: I want to use HMVC throughout the project, so I was planning for all controllers to extend MY_Controller (which in turn is based on MX_Controller).  I was planning to do this irrespective of whether hte controller is in a module, or in the native CodeIgniter controller directory.  Is this fine?

Thanks!

You don’t need to extend MX_Controller unless you are planning on running a controller within another controller. In alot of cases the code be put into a library. Otherwise, your controller should just extend MY_Controller.