I'm seeing this on my development server when the plugin is network activated:
Warning: Missing argument 1 for Jetpack_Module_Control::add_settings_section(), called in /srv/www/wpmu-subdomain/wp-content/plugins/jetpack-module-control/jetpack-module-control.php on line 569 and defined in /srv/www/wpmu-subdomain/wp-content/plugins/jetpack-module-control/jetpack-module-control.php on line 610
Great plugin. Nice work.