Snapshot timed out in the middle of a restore - can't now access backups.

Hi,

I was in the middle of restoring a Snapshot backup from Dropbox, when the restore either timed out or was interrupted by a lost internet connection. When I went into Snapshots/All Snapshots to try again, all my backups had disappeared. They are still present in Dropbox, of course, but Snapshot isn't seeing them.

Is there any way of getting Snapshot to recognise the backup files in Dropbox?