My USB stick has thrown a corrupt file at me. Luckily it's only one file, and after failing to delete the folder it was in, I just renamed the folder and reinstalled the app. Hopefully in this way I can delay reformatting the stick and reinstalling from a complete backup for a few days (though I plan to do so).
However, when I come to do my next backup, will it crash out when it hits the corrupt file, or will it skip it and continue to backup everything else?