Its nice you can make an HD DVD disc ( albeit a mini one) but not at the expense of software stability.
I believe the latest version of Ulead MovieFactory can do that too ( Ver 5 has a SP1) and Ver 5 plus is out , but they seem to veer more towards making Blu ray discs.
( I have a BD disc recorder on my system unable to do anything with it.. for now.)
I have read that HD DVD mini HD-DVDs can be made from authoring HD material to a Standard DVD disc which will then play on an HD DVD player.
As I dont own a Toshiba HD DVD player ( yet) or a PC software emulator Im not sure if this is fact or aspiration

but whatever plays it has to recognise the HD DVD folder as a valid video and not data folder
Lasers
post here touches on that