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.

https://github.com/MayeulC/hb-downloader

Between that and lgogdownloader

https://github.com/Sude-/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)