Update!!!
My hard drive died a week ago and I had to get it replaced. I figured I'd try to install The Void again since I was reinstalling everything anyway, and I'd have a clean slate.
IT WORKED!
I discovered one interesting thing about my old antivirus, AVG free: It never turns off. I had been killing the process from the task manager (and there's about 8 of them for AVG free that run in the background). This is the fun part: About a minute after you turn off the AVG processes, they respawn themselves in the background. So I thought it was off when it really wasn't the whole time.
My advice for the next person having trouble installing The Void: Don't just turn your antivirus off, uninstall it. Personally, I'm never using AVG again - what a pain in the ass!
Thank you guys a million, you've made a phenomenal game and were incredibly patient and dedicated to my problem. Sorry for all the trouble.
