Hello Wunkolo! Just bought this today, tried to install into After Effects 22.2.1 (i'm on windows), it didn't behave correctly, it gave me a generic "unsupported filetype" error so i rolled back to 22.2.0 and that didn't work either. I saw in an above post it's using the 22.0 sdk, do i need to be on 22 or should it be working in the most current version of After Effects?
To install native plugins like PixDither, you have to put the .aex file into the correct directory:
C:\Program Files\Adobe\Adobe After Effects (version)\Support Files\Plug-ins
In my case, this is: C:\Program Files\Adobe\Adobe After Effects 2022\Support Files\Plug-ins
and then it will show up under the "Wunk Effects" category in the effects panel. Simply clicking on the .aex file will fail as it is not a file that can be trivially opened or installed as a script.