kmz and kml typs are not working!

Ummm. I succeeded a kml/kmz file using your code.
Please check the file extension list in the plugin setting.

I downloaded dodekanes.kmz file and tried to upload to my WordPress (WordPress 4.4.2 and WordPress 4.5 RC2).
I can do it.

Please check the file extension seting in the plguin setting.
Screenshot: https://drive.google.com/file/d/0B02WfvGc5CB2YjR1Z0pWcjg3Xzg/view?usp=sharing

If “kmz = application/vnd.google-earth.kmz” in the end line of “List of allowed mime types and file extensions by WordPress” in “Mime Type Settings” was added and a kmz file cannot be updated to the Media, please add the following php code to functions.php in the theme.

add_filter('upload_mimes','add_custom_mime_types');
	function add_custom_mime_types($mimes){
		return array_merge($mimes,array (
			'kmz' => 'application/vnd.google-earth.kmz',
		));
	}

Reference: https://paulund.co.uk/change-wordpress-upload-mime-types

In case that the above code on functions.php in the theme does not work, the other plugin or other setting may be wrong. Please deactivate other plugins and try to it.

Basically, the function for adding mime type is prepared by WordPress.
Reference: https://codex.wordpress.org/Plugin_API/Filter_Reference/upload_mimes

I fixed the compatibility with “Media Library Assistant” plugin.
You can active both of new version (2.0.2) and “Media Library Assistant” plugin.