BadBoy handles upper/lowercase and spaces, so infact there's 2 triggers there that didn't hit, was the addon definitely on and updated?
Yes, it was on and updated.
EDIT: Err... forget it. Seems Answering Machine Pro sometimes plays back tells that were actually blocked by BadBoy. The original message was reported by your addon and never displayed in game. It doesn't happen all the time tho, so there might still be a bug.