Yes, thank you, and your colleagues for the work you have put in to resolving issues with my archaic files.
I've tried it, and all seems to be working fine - video import, audio import, edit, and export.
I suppose I have to wait for this version to go live before taking up your fellow's offer of a free licence, as that only goes to 7.01 currently.
Again, many thanks; I've already recommended this to a friend.