FCP iPad Export Failed

Decided to give FCP for iPad a try tonight. Went well, was able to edit my vlog in an hour and ready for export.

It's about 17mins. All footage taken with iPhone which I downloaded to iPad before hand.

No matter what I try to export, or how I try to export, or file type, codec, I've clicked them all - Export fails at 30% everytime.

iwas able to get the "FCP for iPad" export to go into my iCloud. Just trying to get it to sync, but I've searched corners of the internet and no one has mentioned this type of failure.

The message just says "export failed, export failed, ok"