Can't Restore Recent Files

I am trying to restore files from a backup, in the Comodo program it only seems to want to restore files from 2013 even though I have a 2015 backup set selected. There certainly should be files from 2015 in a 2015 backup set.
This backup has been running for a while, with adding incrementals to the backup file. I am wondering if one of the incrementals is broken and if there’s a way to repair or work past it?

Any help would be hugely appreciated, really need to restore this data if at all possible!

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