Well, I have figured it out. I'm not sure why this works but let me explain;
So, I use chrome. When on chrome you install something it pops up on a bar in the bottom of your screen. You can click on your download to make it auto-open. For some reason when I did this it made it error out and corrupted the file. I decided to try again but this time I waited until it was fully done installing, clicked the menu up button on the download and selected show in folder, from there I used 7-Zip to extract.
I'm not sure why the second method works and not the first but oh well, don't fix what isn't broken.
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SanityThat's post in Zip Folder Invalid? was marked as the answer