I'm receiving blank new member request admin notifications, and I'm on WP 3.8.1 using both BP-Registrations Options 4.1.3 and the All-In-One Security and Firewall plugin for extra security. I have been receiving a LOT of spam registrations, so I wanted to be especially secure, because I felt that what BP Registration Options alone was not enough. However, I do like the plugin alot! Just wanted to let you know that this was happening. Noticed here that it had been happening with someone else on an older version of WP. Still is happening. Thanks!