Cannot access empty property in Modular Extensions - HMVC 5.4 and CI 2.1.4

[eluser]Unknown[/eluser]

Code:

Fatal error: Cannot access empty property in \third_party\MX\Loader.php on line 214

Line 214

Code:

return CI::$APP->$_alias;

I'm using CI 2.1.4 and Modular Extensions - HMVC 5.4 by wiredesignz

HMVC compatible with CI 2.1.4?

How can i fix it?

Regards
Bora