I am SURE I told you about this before.. but what are you doing acting like a windows user and downloading zips via a browser from Humble for? hb-downloader will download all your bundle (save steam keys obviously) with checksum and hashing to make sure nothing is corrupt.
Between that and lgogdownloader
it has made like soooooooooooo much easier. I can just run a cron job and the scripts will download my purchases as I make them and I never have to forget what I have bought (we've all done it don't be shy)