This plugin had an issue w/BitNami, where I was using it to update my sites off-line. When I finished setting up WP Multisite and re-added all of my plugins, this one crashed the system. Today, doing them a few at a time, I got a 'fatal error' msg. and a name of the culprit, so that's it. Had to delete.
Hopefully, it's something minor and you guys will find out what caused the problem. Good luck to you.