Sabre Version 1.2.0 with WP 3.3.1 - in Multisite mode.
When I try to create a new user/site Sabre DOES approve the user registration, but then Sabre blocks the User ID Creation and delivers this message "ERROR: Registration stopped by Sabre".
The users ARE listed in "approved registrations" but no emails are sent.
With Sabre enabled, if I allow registrations only (not blog creation) then the confirmation emails are sent just fine.
If I disable Sabre, all works fine.