Possibly is. And now that I read my previous answer where I think it's not that because of the errors, I realise the logic was faulty there.
If you can spot the newer files, try to open them in winrar, 7zip, whatever you use, to see if it gives a error that the file is corrupted or such. Not sure if there's a utililty somewhere in the Hub that can scan for broken zips (VARs).