Did you verify in the catalogs that files were backed up? If you run the Working Set backup for all files modified changed today, all FOLDERS will be backed up as part of the structure, but if you look in the folders most are empty except for files created or modified today.
Double check that, I just ran a quick check and mine works fine, but it looks like it backs up everythign since the catalogs show all the folders and subfolders.
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