Ok, it does seem that I have failed to properly set the bit. For those of you who got these first copies of the disk, if you can figure out how to tell your player or your tv to display at 16:9, it should stretch to the right dimension. That should tide you over until I get the corrected version out.
Only the three reels of the film are intended to be widescreen. The PSA and the "making of" are both 4:3. The menu doesn't really matter, the way I've made it.
When I get back next week, I'll make the corrections and get the final version out. In the meantime, please don't distribute the version that is out there now.
Oh, and thanks for pointing me to the repair tools. But I'd really like to know how to properly set the bit in TMPGEnc. Can anyone tell me how that is done?