Have you clicked the AutoMagic buttons and activated BOTH root folder and wp-admin BulletProof Modes?
Here is a link below to the BPS troubleshooting help section which has steps to confirm, eliminate or isolate the problem. This Forum topic is also the main BPS troubleshooting page for other common problems.
http://forum.ait-pro.com/forums/topic/read-me-first-free/#bps-free-general-troubleshooting