[split] object_to_array ... (CodeIgniter 3.1.3 Released)

There have also apparently been changes in the loader that aren't mentioned in the upgrade notes.  After upgrading I'm getting the following:

Call Stack
# Time Memory Function Location
1 0.0014 280072 {main}( ) ...\index.php:0
2 0.0070 354896 require_once( 'C:\wamp64\www\danceminder2\codeigniter3\system\core\CodeIgniter.php' ) ...\index.php:321
3 0.1601 4651136 call_user_func_array:{C:\wamp64\www\danceminder2\codeigniter3\system\core\CodeIgniter.php:532} ( ) ...\CodeIgniter.php:532
4 0.1601 4654024 DanceMinder->index( ) ...\CodeIgniter.php:532
5 0.4210 6956592 MX_Loader->view( ) ...\Danceminder.php:297
A PHP Error was encountered

Severity: Error
Message: Call to undefined method MY_Loader::_ci_object_to_array()
Filename: MX/Loader.php
Line Number: 299

I'll post more once I've had a chance to debug and figure out where things are going wrong.