Yes, only the very short files finish exporting, all the big ones just stop around 30%.
At the moment I’m exporting again, having changed the Debayer settings from Full to 1/8th, and not only does that speed up the process of exporting dramatically, the exports also don’t seem to stall anymore.
It’s not ideal, but at least I will be able to start editing some time tomorrow!
Still strange that I can’t AMA-link, that would make everything (including the online) so much easier!