I have so little to go on here, Guy, that I don't know how to respond. I don't know of any cases where a copy would indicate success and then copy "nothing", nor anything where files would be mysteriously "skipped", if you're using the standard "Backup - all files" script.
What folders were empty? What script were you using? Do you think that, perhaps, your drive was corrupt enough when you made the backup that the system wasn't returning the right files in the first place?
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--Dave Nanian
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