Hey, there is an update for DVD studio pro (now 4.1.2) in the software update...
"DVD Studio Pro 4.1.2 provides important bug fixes and addresses compatibility issues with DVD Studio Pro 4.1 HD DVD projects and Toshiba HD DVD players.
DVD Studio Pro 4.1.2 also updates the Disc Description Protocol (DDP) 2.1 to DDP 3.0 and the Cutting Master Format (CMF) 1.0 to CMF 2.0, which is required for HD DVD replication.
This update is recommended for all DVD Studio Pro 4.1 users."
"DVD Studio Pro 4.1.2 provides important bug fixes and addresses compatibility issues with DVD Studio Pro 4.1 HD DVD projects and Toshiba HD DVD players.
DVD Studio Pro 4.1.2 also updates the Disc Description Protocol (DDP) 2.1 to DDP 3.0 and the Cutting Master Format (CMF) 1.0 to CMF 2.0, which is required for HD DVD replication.
This update is recommended for all DVD Studio Pro 4.1 users."