Hola
Happen to my too, I manage to open it as follow; I just open the Optical disk go to Clip Folder, open the clip you have problem with the MPEG Streamclip software it is free from the web, it won't recognise the file at once so a message will come out asking you what you want to do, so select "Open any way"... after a few min it will be read it by the Mpeg streamclip and you can exported to any format you want.
I can't find any another option at the moment
Cheers
Eduardo Ferrar