Hal’s edits are notoriously difficult to burn to disc. It has something to do with the way his Mac encodes the video, even though it’s technically BD compliant. I’ve never been able to successfully do it myself, but apparently some have.
It’s worth asking, though - are you using his 1080p video or his 720p? If it’s the 720p, the video may not be BD compliant anyway (I don’t know if he crops the letterbox black bars so it isn’t full 1280x720 or if his encoding settings aren’t BD compliant for the 720p version).