"Mt. Mograph Motion 3" Extension cannot install
I'm trying to install an After Effects extension using ZXP installer. Running the .exe errors out and gives me this error:

According to that site (https://helpx.adobe.com/exchange/kb/error-codes.html), I believe that it thinks the installer is corrupt. This can't be true because one of my coworkers was able to install just fine with the same installer.
Trying to brute force install by dragging the .zxp file into ZXP installer gives me this dialogue:

I don't want to brute force install this extension as then I won't be able to auto-update it (it updates frequently). Why aren't any of my CC applications being recognized by ZXP installer? I've reinstalled AE and that doesn't seem to help. I'm using AE 2020.
