When using the Google Maps WD plugin with the Client Access plugin, an error is thrown because the init action gets skipped and the classes do not get loaded.

Fatal error: Class 'GMWDHelper' not found in /*/wp-content/plugins/wd-google-maps/gmwd_class.php on line 110

Changing the order in which the classes become loaded solves the issue. Details below:

Line 21 of gmwd_class.php change

add_action('init', array($this, 'gmwd_includes'));

to 

add_action('init', array($this, 'gmwd_includes'), 1);

Hello Michael!

Thanks so much for reporting our team about this problem. I have forwarded your notes to our development team. They will take a look and work on the problem for the next update of Google Maps WD plugin.

Have an amazing day!