I got it working. Was some error with the Microsoft Runtime C++ 2015 Redistributable, it seems. Just for davisilva's reference, it took me uninstalling the vc_redist2015, restarting, and then reinstalling and restarting to get it working. The repair option on my previously existing install as well as unistalling and reinstalling without restarting my computer didn't fix it. *shrug* Computers, how do they work?
Anyways, thanks for the help. Also, while I'm here, verifying the game cache didn't detect anything wrong or fix the problem prior to manually messing with the vc_redist2015, just an FYI. Thanks again though!