The Remove Email Verification From Signup plugin still sending the activation email

I am using the latest version of the Remove Email Verification From Signup plugin, and have installed it as per the readme.txt instructions.

My Problem is: The plugin has disabled the need to the activate your account, but it still sends an activation email with a key to the registering user.

How can I stop the activation mail from sending?

System:
Wordpress MU 2.9.1
BuddyPress 1.1.3

Plugin:
https://premium.wpmudev.org/project/remove-email-verification-from-signup/