I got the same message on my site.
I opened the header and added */ just after Network: true, then reopened the comment on the line below.
Author: Aaron Edwards
Author URI: http://uglyrobot.com
Network: true*/
/*
Copyright 2009-2014 UglyRobot Web Development (http://uglyrobot.com)
This program is free software; you can redistribute it and/or modify etc ...
I reactivated the plugin, and no error showed out again.
I’ve made adjustments in 3.1.5, hopefully that fixes it for you.
