Thank you for the offer, you are very patient.

The files may be found here: http://myweb.tiscali.co.uk/albertd/diagnostic.zip

You will find the only menu in the VMG. It should start up with a cyan line (Button 1) under the words 'Designing your future'.

This line seems to appear reliably on first start up, but after playing part (or perhaps all) of one of the items in the list, if I press either of the 'menu' buttons on the remote, the menu reappears, and sometimes the cyan line is there and sometimes it is not. The focus appears to be correctly back on Button 1 as I can still navigate blindly and select items, but it makes it rather difficult to know where you are.