I cannot get the file to export to any form I just get the triangle with the ! in the middle no explanation at all as to what is wrong. 743 mB file 343 photos and 14.38 minutes.
I see your post was made last night (UK time) so I would guess the banquet has now happened!
It is very difficult to diagnose what could be the problem with your export without a lot more information. Please read this post and post back with ALL the information requested, including details of the format you were wanting to export to.
I realise this may be "too late" for the current project but should enable us to help you with more successful exports in the future.