Undefined Method: stdClass::get_network_property_defaults

Noticed the advertisements on my site were not displaying so I went in and checked it out. Further noticed my advertising “sets” had become undefined. So I went into to reset the definitions and when I attempted to restore those definitions and I save the adset I get:

Fatal error: Call to undefined method stdClass::get_network_property_defaults() in /home/wiskicom/public_html/wp-content/plugins/advertising-manager/lib/Advman/Admin.php on line 91

Thanks